实验室制取二氧化硫三个公式,实验室制取二氧化硫的步骤

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1、铁和硫磺:________________________________________________;

Fe S==(加热)FeS

2、铜和硫磺:________________________________________________;

2Cu S==(加热)Cu2S

3、硫磺和氧气:______________________________________________;

S O2==(点燃)SO2

4、硫磺和汞:________________________________________________;

Hg S==HgS

5、硫磺溶于热的浓氢氧化钠:________________________________________________;

3S 6NaOH==(加热)2Na2S Na2SO3 3H2O

6、硫化氢和少量氢氧化钠:__________________________________________________;

H2S NaOH==NaHS H2O

7、硫化氢和足量氢氧化钠:__________________________________________________;

H2S 2NaOH==Na2S 2H2O

8、实验室制备硫化氢:_____________________________________________________;

FeS H2SO4==FeSO4 H2S↑

9、硫酸亚铁和硫化钠:_____________________________________________________;

FeSO4 Na2S==FeS↓ Na2SO4

10、硫化氢和硫酸铜:______________________________________________________;

H2S CuSO4==CuS↓ H2SO4

11、检验空气中是否含有硫化氢:_____________________________________________;

(硫化氢和硝酸铅)

H2S Pb(NO3)2==PbS↓ 2HNO3

12、硫化氢完全燃烧:_____________________________________________________;

2H2S 3O2==(点燃)2H2O 2SO2

13、硫化氢不完全燃烧:___________________________________________________;

2H2S O2==(点燃)2H2O 2S

14、硫化氢在空气中被氧化:_______________________________________________;

2H2S O2==2H2O 2S

15、硫化氢和氯气(溴水,碘水):__________________________________________;

H2S Cl2==2HCl S

16、硫化氢和次氯酸钠:__________________________________________________;

H2S NaClO==NaCl S↓ H2O

17、硫化氢和二氧化硫:__________________________________________________;

2H2S SO2==3S 2H2O

18、硫化钠 亚硫酸钠 盐酸:______________________________________________;

2Na2S Na2SO3 6HCl==3S↓ 6NaCl 3H2O

19、二氧化硫 澄清石灰水:_______________________________________________;

SO2 Ca(OH)2==CaSO3↓ H2O

20、过量的二氧化硫 氢氧化钙:___________________________________________;

2SO2 Ca(OH)2==Ca(HSO3)2

21、盐酸 亚硫酸钙:____________________________________________________;

2HCl CaSO3==CaCl2 SO2↑ H2O

22、实验室制二氧化硫:_________________________________________________;

Na2SO3 H2SO4(浓)==Na2SO4 SO2↑ H2O

23、二氧化硫的催化氧化:_______________________________________________;

2SO2 O2==(可逆,催化剂,加热)2SO3 Q

24、亚硫酸钠在空气中氧化:_______________________________________________;

2Na2SO3 O2==2Na2SO4

25、二氧化硫和氯气溶于水(溴单质、碘单质):______________________________________;

SO2 Cl2 2H2O==H2SO4 2HCl

26、二氧化硫 次氯酸钠:_________________________________________________;

SO2 NaClO H2O==H2SO4 NaCl

27、铜和浓硫酸:_________________________________________________________;

Cu 2H2SO4(浓)==(加热)CuSO4 SO2↑ 2H2O

28、碳和浓硫酸:_________________________________________________________;

C 2H2SO4(浓)==(加热)CO2↑ 2SO2↑ 2H2O

29、胆矾和浓硫酸:______________________________________________________;

CuSO4·5H2O==(浓硫酸)CuSO4 5H2O

30、蔗糖和浓硫酸:______________________________________________________;

C12H22O11==(浓硫酸)12C 11H2O

31、碘化氢(溴化氢)和浓硫酸:________________________________________________;

2HI H2SO4(浓)==I2 SO2 2H2O

32、硫化氢和浓硫酸:____________________________________________________;

H2S H2SO4(浓)==S↓ SO2 2H2O

33、沸腾炉中的反应(工业制硫酸第一步):_________________________________________;

4FeS2 11O2==(煅烧)2Fe2O3 8SO2

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