2022年2022年高中化学方程式总结

1、精选学习资料 - - - 欢迎下载高中化学方程式总结（summary of high school chemistryequations）summary of high school chemistry equationsi. basic classnon-metallic elemental f2、 cl2、 o2、 s、 n2、 p、 c、 si1. oxidation:f2 + h2 = = 2hff2 + xe excess = = xef2 2f2 overdosenf2 + 2m = = 2mfn representing most metals2 f2 + 2 h2o = = =

2、 4 hf + o22 f2 + naoh = = = 2 naf + of2 + h2o f2 + 2 nacl = = = 2 naf + cl2f2 + 2 nabr naf + br2 = = = 2 f2 + 2 nai naf + i2 = = = 2f2 + cl2 equal volume = = 2clf精品学习资料精选学习资料 - - - 欢迎下载3f2 excess + cl2 = = 2clf3 7f2 + i2 = = 2if7cl2 + h2 = = = 2 hcl3 cl2 pcl3 + 2 p = = = 2 cl2 + pcl3 = = = pcl5nacl

3、cl2 na + 2 = = = 2 3 cl2 + 2 fe = = = 2 fecl3fecl3 cl2 fecl2 + 2 = = = 2 cl2 + cu = = = cucl22 cl2 nabr + 2 = = = 2 nacl + br2 cl2 + 2 nai nacl + i2 = = = 25 cl2 + i2 + 6 h2o + 10 = = = 2 hio3 hclcl2 na2s + nacl = = = 2 + s cl2 + h2s = = = 2 hcl + scl2 + so2 + 2 h2o + 2 = = = - h2so4 hcl cl2 + h2o2

4、hcl + o2 = = = 2精品学习资料精选学习资料 - - - 欢迎下载2 o2 + 3 fe = = = fe3o4 o2 + k = = = ko2s + h2 = = = h2s 2 s + c = = = cs2 s + fe = = = fess + 2 cu = = = cu2s 3 s + 2 al = = = al2s3s + zinc = = = zns n2 + 3 h2 = = = 2 nh3n2 + 3 mg = = = mg3n2 n2 + 3 ca = = = ca3n2 n2 + 3 ba = = = ba3n2n2 na3n na + 6 = = = 2

5、n2 + 6 k = = = 2 k3nn2 + 6 rb3n rb = = = 2精品学习资料精选学习资料 - - - 欢迎下载the p2 + 6 h2 = = = 4 ph3 p + 3 na = = = na3p2 p + 3 zinc = = = zn3p22. reductionism s + o2 = = = so2 s + o2 = = = so2s + 6 hno3 thick = = = - h2so4 no2 + 6 + 2 h2o 3 s + 4 hno3 so2 loose = = = 3 + 4 no + 2 h2o n2 + o2 = = = 2 no4p + 5

6、o2 = = p4o10 often written as p2o52p plus 3x2 is equal to 2px3 x is f2、 cl2、 br2. px3 + x2 = = = px5p4 hno3 + 20 thick = = = 4 h3po4 no2 + 4 h2o + 20 c + 2 f2 = = = cf4c + 2 cl2 = = = ccl42 c + o2 small = = = 2 co精品学习资料精选学习资料 - - - 欢迎下载c + o2 enough = = = co2 c = = = 2 co + co2c + h2o = = co + h2 ge

7、nerating water gas2c + sio2 = = = si + 2co made of coarse siliconsi coarse + 2 cl = = = sicl4sicl4 + 2 h2 = = = si pure + 4 hclsi + o2 = = = sio2 powder si + c = = sic emerysi + naoh + 2 h2o + 2 h2 = = = na2sio33. disproportionationcl2 + h2o = = = hcl + hcloacid suppression disproportionation、 alkal

8、i or light promoting disproportionationcl2 naoh + 2 = = = nacl + naclo + h2o2cl 2 + 2ca oh 2 = = cacl2 + ca clo 2 + 2 h2o3cl2 + 6koh精品学习资料精选学习资料 - - - 欢迎下载3 s + 6 naoh = = = 2 na2s + na2so3 + 3 h2o 4p plus 3koh11 p + 15 cuso4 h2o + 24 = = = 5 + 6 h3po4 cu3p + 15 - h2so4 3 c + cao = = = cac2 + co3 c

9、+ sio2 = = = sic + 2 cosecond、 thereducibilityofmetalsinglesubstancena、mg、 al、 fenah 2 na + h2 = = = 2 4 na + na2o o2 = = = 22 na2o2 na2o + o2 = = = 2 2 na + o2 = = = na2o22na + s = = na2s.na + 2 h2o naoh + h2 = = = 2 na + 2 nh3 nanh2 + h2 = = = 24na + ticl4 melt = = 4nacl + ti mg + cl2 = = = mgcl2精

10、品学习资料精选学习资料 - - - 欢迎下载mg + br2 = = = mgbr2mgo style 2 mg + o2 = = = 2 mg + s = = = the mgsmg + 2h2o = = mg oh 2 + h22mg + ticl4 melt = = ti + 2mgcl2 mg + 2 rbcl = = = mgcl2 rb + 2mg 2 + co2 mgo style + c = = = 2 mg 2 + sio2 = = = 2 mgo style + si mg + h2s = = = the mgs + h2mg + - h2so4 = = = mgso4 +

11、 h2al 2 + 3 alcl3 cl2 = = = 24al + 3o2 = = 2al2o3 passivation4 al hg o2 + 2 + 3 xh2o = = = 2 al2o3. xh2o + 4 hg4 al + 3 mno2 = = = 2 al2o3 + 3 mn 2 al + cr2o3 = = = al2o3 + 2 cr精品学习资料精选学习资料 - - - 欢迎下载2 al + fe2o3 = = = al2o3 + 2 feal 2 + 3 feo = = = al2o3 + 3 fe2 al + 6 hcl alcl3 + 3 h2 = = = 2al 2

12、+ 3 - h2so4 = = = al2 so4 3 + 3 h22 al + 6 - h2so4 thick = = = al2 so4 3 + 3 so2 + 6 h2o al、 fe in cold、 thick h2so4、 hno3 passivational + 4 hno loose = = = al no3 3 + no + 2 h2o 2 al naoh + 2 + 2 h2o naalo2 + 3 h2 = = = 2fe 2 + 3 br2 febr3 = = = 2 fe + i2 = = = fei2fe + s = = = fesfe 3 + 4 h2o g =

13、= = fe3o4 h2 + 4 fe 2 + hcl = = = fecl2 + h2fe + cucl2 = = = fecl2 + cu fe + sncl4 = = = fecl2 + sncl2iron is not able to complete tetrachloride in an acidic精品学习资料精选学习资料 - - - 欢迎下载environmentit's reduced to a single tin fe + sncl2 = = fecl2 + sn. three、 non-metallic hydride hf、 hcl、 h2o、 h2s、 nh

14、31. reducibility:4 hcl thick + mno2 = = = mncl2 + cl2 + 2 h2o 4 hcl g + o2 cl2 = = = 2 + 2 h2o16 kmno4 hcl + 2 = = = 2 kcl mncl2 + 5 cl2 + 8 h2o + 2 14 hcl + kcl k2cr2o7 = = = 2 + 2 + 3 cl2 crcl3 + 7 h2o2 h2o + 2 f2 = = = 4 hf + o22 h2s + 3 o2 enough = = = 2 so2 + 2 h2o 2 h2s + o2 small = = = 2 s +

15、2 h2o2 h2s + so2 = = = 3 s + 2 h2oh2s + - h2so4 thick = = = s + so2 + 2 h2oh2s + 2 hno 3 loose = = = 3 s + no + 4 2 h2o5 h2s + 2 + 3 - h2so4 kmno4 = = = 2 mnso4 + k2so4 + 5 s + 8 h2o 3 h2s + k2cr2o7 + 4 - h2so4 = = = cr2 so4 3 + k2so4 + 3 s +精品学习资料精选学习资料 - - - 欢迎下载7 h2oh2s + 4 na2o2 + 2 h2o + 6 = =

16、= na2so4 naoh 2 nh3 + 3 cuo = = = 3 cu + n2 + 3 h2o2 nh3 + 3 cl2 = = = n2 + 6 hcl8 nh3 + 3 cl2 = = = n2 + 6 nh4cl4 nh3 + 3 o2 pure oxygen = = = 2 n2 + 6 h2o 4 nh3 + o2 = = = 4 no 5 + 6 h2o4nh3 + 6no = = 5n2 + 6ho remove no with ammonia nah + h2o = = = naoh + h24 nah + ticl4 = = = ti + 4 nacl + 2 h2

17、cah2 + 2 h2o = = = the ca oh 2 + 2 h2 2、 acid:4 hf + sio2 = = = sif4 + 2 h2othis reaction is widely used in the determination of sio2 in the sample or steel sample2 hf + cacl2 = = = caf2 + 2 hcl精品学习资料精选学习资料 - - - 欢迎下载h2s + fe + h2 = = = fesh2s + cucl2 = = = cus hcl + 2h2s agno3 + 2 = = = ag2s hno3 +

18、 2 h2s + hgcl2 = = = hgs + 2 hclh2s + pb no3 2 = = = pbs + 2 hno3 h2s + fecl2 = = =2 nh3 + 2 na nanh2 + h2 = = 2 nanh2 + h2o = = = naoh + nh33. basic:nh3 + hcl = = = nh4cl nh3 + hno3 = = = nh4no32 nh3 + - h2so4 = = = nh4 2 so4nh3 + nacl + h2o + co2 = = = nahco3 + nh4clthisreactionisused inindustrial

19、preparationofbakingsoda、 soda4. instability:精品学习资料精选学习资料 - - - 欢迎下载2 hf = = = h2 + f22 hcl = = = h2 + cl22 h2o = = = 2 h2 + o2 h2o2 = = = 2 h2o + o2 h2s = = = h2 + s2 nh3 = = = n2 + 3 h2four、 nonmetallic oxide low price states:2 so2 so3 + o2 = = = 2so2 + o2 + 2 h2o = = = 2 - h2so4this is the environ

20、mental chemical reaction of so2 in the atmosphere.so2 + cl2 + 2 h2o + 2 = = = - h2so4 hcl so2 + br2 + 2 h2o = = = - h2so4 gets + 2 so2 + i2 + 2 h2o = = = + 2 hi - h2so4 so2 + no2 = = = so3 + no精品学习资料精选学习资料 - - - 欢迎下载2 no no2 + o2 = = = 2no naoh + no2 + 2 = = = 2 nano2used in nitric acid industry to

21、absorb no and no2 in exhaust gas2 co、 co2 + o2 = = = 2co + cuo = = = cu + co23 co + co2 fe2o3 = = = fe 2 + 3 co + h2o = = = co2 + h2oxidation:so2 + 2 h2s = = = 3 s + 2 h2o so3 + 2 ki = = = k2so3 + i2no2 + 2 ki + h2o + i2 + 2 = = = no kohno starch ki solution can be used to identify bromine vapor and

22、 no2.4 = = = 4 no + no2 + h2s so3 + h2o2 no2 + cu = = = 4 cuo + n2the co2 + 2 mg mgo style + c = = = 2精品学习资料精选学习资料 - - - 欢迎下载co2 cannotbe used toextinguishfiressuch as mg、 ca、 ba、 na、 k、 etc.sio2 + 2 h2 = = = si + 2 h2osio2 + 2 = = = 2 mg mgo style + si 3、 the function of water:so2 + h2o = = = h2so3

23、 so3 + h2o = = = - h2so43 no2 + h2o hno3 + no = = = 2 n2o5 hno3 + h2o = = = 2 p2o5 + h2o hpo3 = = = 2 p2o5 + 3 h2o h3po4 = = = 2p2o5 iseasy toabsorb waterand can be used as a gas desiccant p2o5 + 3 - h2so4 thick = = = 2 + 3 so3 h3po4the co2 + h2o = = = h2co34. effects of alkaline substances:so2 + 2

24、nh3 + h2o = = = nh4 2 so3精品学习资料精选学习资料 - - - 欢迎下载so2 + nh4 2 so3 + h2o nh4hso3 = = = 2thisisthereactionofthe sulfuricacidplanttoreclaimso2. we can use h2so4 to treat it: 2nh4 hso3 + h2so4the productionofammoniumsulfateas fertilizer、so2cycleas raw material gas.so2 + ca oh 2 = = = caso3 + h2ono clarifi

25、cation of so2 and co2. so3 + mgo style = = = mgso4so3 + ca oh 2 = = = caso4 + h2othe co2 + 2 naoh too much = = = na2co3 + h2o co2 too much + naoh = = = nahco3the co2 + ca oh 2 too much = = = caco3 + h2o 2 too much co2 + ca oh 2 = = = ca hco3 2 co2 + 2 + 3 h2o naalo2 = = = 2 al oh 3 + na2co3the co2 +

26、 c6h5ona + h2o = = = c6h5oh + nahco3 cao sio2 + = = = casio3精品学习资料精选学习资料 - - - 欢迎下载sio2 naoh + 2 = = = na2sio3 + h2oslow-corroded glass at room temperature sio2 + na2co3 = = = na2sio3 + co2 sio2 + caco3 = = = casio3 + co2five、 metal oxide1. reductive nature of low price states: 6 fe3o4 feo + o2 = =

27、= 2feo hno3 + 4 = = = fe no3 3 + no2 + 2 h2o2、 oxidation:na2o na2o2 na + 2 = = = 2the reaction was used to prepare na2omgo、 al2o3 has little oxidation、 and it's hard to be reduced to mg、 al.usually by electrolysis of mg and al. fe2o3 + 3h2 = 2fe + 3h2o. fe3o4 h2 + 4 = = = fe 3 + 4 h2o精品学习资料精选学习资

28、料 - - - 欢迎下载3. the role of water:naoh na2o + h2o = = = 22 na2o2 + 2 h2o = = = 4 naoh + o2this reaction is divided into two steps: na2o2 + 2h2o = = = 2naoh + h2o2;the preparation of 2h2o2 = = = 2h2o + o2. bao2 + - h2so4 loose = = = baso4 + h2o2mgo + h2o = = mg oh 2 slow reaction4. effects of acid sub

29、stances: na2o + so3 = = = na2so4 na2o + co2 = = = na2co3hcl na2o + 2 = = = 2 nacl + h2oco2 na2o2 2 + 2 = = = 2 na2co3 + o2na2o2 + h2so4 cold、 thin = = na2so4 + h2o2mgo style + so3 = = = mgso4mgo style + - h2so4 = = = mgso4 + h2o精品学习资料精选学习资料 - - - 欢迎下载al2o3 + 3 - h2so4 = = = al2 so4 3 + 3 h2oal2o3 is

30、 amphoteric oxide:naoh al2o3 + 2 = = = 2 naalo2 + h2o feo + 2 hcl = = = fecl2 + 3 h2o fecl3 fe2o3 hcl + 6 = = = 2 + 3 h2o fe2o3 + 3 h2s g = = = fe2s3 + 3 h2ofe3o4 hcl + 8 = = = fecl2 fecl3 + 2 + 4 h2o hexaoxic acid1. oxidation:4 hclo3 + 3 h2s = = = 3 + 4 - h2so4 hcl hclo3 = = = + hi hio3 + hcl= = =

31、3 hclo + hi hio3 + 3 hcl hclo + h2so3 = = = - h2so4 + hcl hclo + h2o2 = = = hcl + h2o + o2oxidation: hclo > hclo2 > hclo3、 hclo4、精品学习资料精选学习资料 - - - 欢迎下载but thick、 hot hclo4 is very oxidizing2 - h2so4 thick + c = = = co2 + 2 + 2 h2o so2 2 - h2so4 thick + s = = = 3 so2 + 2 h2oh2so4 + fe al passi

32、vation at room temperature6 - h2so4 thick + 2 fe = = = fe2 so4 3 + 3 so2 + 6 h2o 2 - h2so4 thick + cu = = = cuso4 + so2 + 2 h2o- h2so4 thick gets + 2 = = = so2 + br2 + 2 h2o= = = - h2so4 thick + 2 hi so2 + i2 + 2 h2o- h2so4 loose + fe = = = feso4 + h2h2so3 2 + 2 h2s = = = 3 s + 2 h2o4 hno3 thick + c

33、 + 4 = = = co2 no2 + 2 h2o6 hno3 thick + s + 6 = = = - h2so4 no2 + 2 h2o 5 hno3 thick + p = = = h3po4 + 5 no2 + h2o6 hno3 + fe = = = fe no3 3 + 3 no2 + 3 h2o 4 hno3 + fe = = = fe no3 3 + no + 2 h2o30 hno3 + 8 fe = = = 8 fe no3 3 + 3 n2o + 15 h2o精品学习资料精选学习资料 - - - 欢迎下载36 hno3 + 10 fe = = = 10 fe no3

34、3 + 3 n2 + 18 h2o30 hno3 + 8 fe = = = 8 fe nh4no3 no3 3 + 3 + 9 h2o2. reducing nature:h2so3 + x2 + h2o + 2 = = = - h2so4 hx x cl2、 br2、 i22 h2so3 + o2 = = = 2 - h2so4h2so3 + h2o2 = = = - h2so4 + h2o5 h2so3 + 2 kmno4 mnso4 + k2so4 = = = 2 + 2 + 3 h2o - h2so4 h2so3 fecl3 + h2o + 2 = = = - h2so4 + 2 +

35、2 hcl fecl23、 acid:- h2so4 thick + caf2 = = = caso4 + 2 hf- h2so4 thick + nacl = = = nahso4 + hcl- h2so4 thick + 2 nacl = = = na2so4 + 2 hcl- h2so4 thick + nano3 = = = nahso4 + hno3 3h2so4 thick + ca3 po4 2 = = = 3caso4 + 2h3po4精品学习资料精选学习资料 - - - 欢迎下载2h2so4 thick + ca3 po4 2 = = = 2caso4 + ca h2po4

36、23 hno3 + ag3po4 = = = h3po4 + 3 agno32 hno3 + caco3 = = ca no3 2 + h2o + co2h2s、 hi、 hbr so2 can not be prepared with hno3 and concentrated h2so4.isotropism4h3po4 + ca3 po4 2 = = 3ca h2po4 2 heavy calcium h3po4 thick + nabr = = = nah2po4 + hbrh3po4 thick4. instability:2 hclo hcl + o2 = = = 24 hno3

37、= = = 4 no2 + o2 + 2 h2o h2so3 = = = h2o + so2 h2co3 = = = h2o + co2 h4sio4 = = = h2sio3 + h2oseven、 alkali精品学习资料精选学习资料 - - - 欢迎下载low price states:4fe oh 2 + o2 + 2 h2o = = 4fe oh 3the role of acidic substances:2naoh + so2 small amount = = na2so3 + h2o naoh + so2 sufficient = = nahso3naoh + 2 sio2 =

38、 = = nasio3 + h2o2 naoh + al2o3 = = = 2 naalo2 + h2o2 naoh + cl2 = = = nacl + naclo + h2o naoh + hcl = = = nacl + h2onaoh + h2s2naoh + h2s small amount = = na2s + 2h2o 3naoh + alcl3 = = al oh 3 + 3naclnaoh + al oh 3 = = naalo2 + 2h2oalcl3 and al oh 3 which is more acidic. naoh + nh4cl = = = nacl + n

39、h3 + h2omg oh 2 + 2 nh4cl精品学习资料精选学习资料 - - - 欢迎下载al oh 3 + nh4cl insoluble3. instability:mg oh 2 = = = mgo style + h2o 2 al oh 3 = = = al2o3 + 3 h2o2 fe oh 3 = = = fe2o3 + 3 h2o cu oh 2 = = = cuo + h2oeight、 salt1. oxidation:2 fecl3 + fe = = = 3 fecl22 fecl3 + cu fecl2 + cucl2 = = = 2 for engraving o

40、f copper wiring2 fecl3 + zinc fecl2 + zncl2 = = = 2 fecl3 + ag = = = fecl2 + agcfe2 so4 3 + 2ag = = f4 + ag2so4fe no3 3 + ag not reaction精品学习资料精选学习资料 - - - 欢迎下载2 fecl3 + h2s fecl2 = = = 2 + 2 hcl + s 2 fecl3 fecl2 + 2 ki = = = 2 + 2 kcl + i2 fecl2 + mg = = = fe + mgcl22. reducing nature:2 fecl2 + fe

41、cl3 cl2 = = = 23 na2s + 8 hno3 loose = = = 6 nano3 + no + 3 + 4 s 2 h2o 3 na2so3 hno3 + 2 loose = = = 3 na2so4 + no + 2 h2o2 na2so3 + o2 = = = 2 na2so43 the role of alkaline substances:mgcl2 + 2 nh3. h2o = = = mg oh 2 + nh4cl alcl3 + 3 nh3. h2o = = = al oh 3 + 3 nh4cl fecl3 + 3 nh3. h2o = = = fe oh

42、3 + 3 nh4cl4. effects of acid substances:na3po4 + hcl = = = na2hpo4 + nacl na2hpo4 + hcl = = = nah2po4 + nacl nah2po4 + hcl = = = h3po4 + nacl精品学习资料精选学习资料 - - - 欢迎下载na2co3 + hcl = = = nahco3 + nacl nahco3 + hcl = = = nacl + h2o + co2na2co3 3 + 2 + 3 h2o alcl3 = = = 2 al oh 3 + 3 + 6 co2 naclna2co3 3

43、 + 2 + 3 h2o fecl3 = = = 2 fe oh 3 + 3 + 6 co2 nacl 3 nahco3 + alcl3 = = = al oh 3 + 3 co23 nahco3 + fecl3 = = = fe oh 3 + 3 co23 na2s + al2 so4 3 + 6 h2o = = = 2 al oh 3 + 3 h2s3 naalo2 + alcl3 + 6 h2o = = = 4 al oh 35. instability:na2s2o3 + - h2so4 = = = na2so4 + s + so2 + h2o nh4cl = = = nh3 + hc

44、lnh4hco3 = = = nh3 + h2o + co22 - kno3 kno2 + o2 = = = 22 cu no3 3 + 4 = = = 2 cuo no2 + o22 kmno4 = = = k2mno4 + mno2 + o2精品学习资料精选学习资料 - - - 欢迎下载2 kcl kclo3 = = = 2 + 3 o22 nahco3 = = = na2co3 + h2o + co2 ca hco3 2 = = = caco3 + h2o + co2 caco3 = = = cao + co2mgco3 = = = mgo style + co22. test subj

45、ects1. test of sulfate ions: bacl2 + na2so4 = baso42. test of carbonate ions: cacl2 + na2co3 = caco3 + 2nacl3. sodium carbonate and hydrochloric acid reaction: na2co3 + 2hcl = 2nacl + h2o + co24. charcoal reduction copper oxide: 2cuo + c high temperature 2cu + co2 arrow5. reaction of iron sheet and

46、copper sulfate solution: fe + cuso4 = feso4 + cu6. the reaction of calcium chloride and sodium carbonate solution: cacl2 + na2co3 = caco3 + 2naclthe sodium is burning in the air: 2na + o2 delta na2o2 sodium and oxygen reaction: 4na + o2 = 2na2o精品学习资料精选学习资料 - - - 欢迎下载8、 sodium peroxide and water reac

47、tion: 2na2o2 + 2h2o = 4naoh+ o2sodium peroxide and carbon dioxide: 2na2o2 + 2co2 = 2na2co3 + o210. sodium and water reaction: 2na + 2h2o = 2naoh + h2 upreaction of iron and water vapor: 3fe + 4h2o g = f3o4 + 4h2 aluminum and hydroxide solution reaction: 2al + 2naoh + 2h2o= 2naalo2 + 3h2 arrow13. cal

48、cium oxide and water reaction: cao + h2o = ca oh 2ironoxideand hydrochloricacidreaction:fe2o3+ 6hcl = 2fecl3+ 3h2othe reaction of alumina and hydrochloric acid: al2o3 + 6hcl = 2alcl3 + 3h2oaluminum oxide reacts with sodium hydroxide solution: al2o3 + 2naoh = 2naalo2 + h2o17. reaction of iron chlorid

49、e and sodium hydroxide solution: fecl3 + 3naoh = fe oh 318. reactionofferroussulfateand sodium hydroxidesolution: feso4 + 2naoh = fe oh 2精品学习资料精选学习资料 - - - 欢迎下载ferroushydroxideisoxidizedtoironoxide:4fe oh 2+ 2h2o+ o2 = 4fe oh 32.heat decomposition+ 3h2oofironhydroxide:2fe oh 3 deltafe2o321. laborato

50、ry preparation of aluminum hydroxide: al2 so4 3+ 6nh3. h2o is equal to 2al oh 3、 and 3 nh3 2so422、 aluminum hydroxide reacts with hydrochloric acid: al oh 3 + 3 hcl = alcl3 + 3h2o23. reaction of aluminum hydroxide and sodium hydroxide solution: al oh 3 + naoh = naalo2 + 2h2o24. heat decompositionofa

51、luminum hydroxide:2aloh 3 delta al2o3 + 3h2o25、 ferric chloride solution and iron powder reaction: 2fecl3+ fe = 3fecl226. chlorinated ferrous chloride: 2fecl2 + cl2 = 2fecl3 27、 silica and hydrofluoric acid reaction: sio2 + 4hf = sif4+ 2h2osilicon elemental and hydrofluoric acid reaction: si + 4hf =

52、 sif4 + 2h2 up28.high temperaturereactionofsilicaand calciumoxide:sio2+ cao high temperature casio3精品学习资料精选学习资料 - - - 欢迎下载29、silicaand sodium hydroxidesolution:sio2 + 2naoh= na2sio3+ h2oto pass intothesodium silicatesolution: na2sio3+ co2+ h2o= na2co3 + h2sio3sodium silicateand hydrochloricacidreact

53、ion:na2sio3+ 2hcl= 2nacl + h2sio332、 chlorine gas and metal iron reaction: 2fe + 3cl2 ignite 2fecl333. chlorine gas and metal copper reaction: cu + cl2 ignites cucl234. reaction of chlorine gas and metal sodium: 2na + cl2 igniting 2naclreaction of chlorine and water: cl2 + h2o = hcl + hclo36. light

54、decomposition of hypochlorite: 2 hclo light 2 hcl + o237. reactionofchlorinegas and sodium hydroxidesolution:cl2+ 2naoh = nacl + naclo + h2o38. chlorinegas and hydratedreaction:2cl2 + 2caoh 2 = cacl2+ ca clo 2 + 2 h2othe reaction of hcl and silver nitrate solution: hcl + agno3精品学习资料精选学习资料 - - - 欢迎下载= agcl + hno3bleachingpowder isexposed tothe airfora longtime:ca clo 2 + h2o + co2 = caco3 + 2 hclosulfur dioxide and water reaction: so