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aelksninsh
@aelksninsh
August 2022
1
5
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найди массовую долю в следующих веществах:
SO2-S03-H2S-NA2S-H2SO4
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Answers & Comments
alinkays
1)2SO2
+ O2 = 2SO3
2)
SO3 → Ba
(HSO4)
2 → H2O → H2 → H2S
Ba
(OH)
2
+ 2SO3(изб.) = Ba(HSO4)
2Ba(HSO4)2 + Ba(OH)2 = 2BaSO4↓ + 2H2O
LiH + H2O = LiOH + H2↑
H2 + S = H2S
3)H2S + 2NaOH(конц.) = Na2S + 2H2O
4)
Na2S → NaOH → H2O → H2SO4
Na2S
+ H2O = NaHS + NaOH
Cr(OH)3 + 3NaOH = Na3CrO3 + 3H2O
Условия: при сплавлении
SO3 + H2O(хол.) = H2SO4(разб.)
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Answers & Comments
2)SO3 → Ba(HSO4)2 → H2O → H2 → H2S
Ba(OH)2 + 2SO3(изб.) = Ba(HSO4)
2Ba(HSO4)2 + Ba(OH)2 = 2BaSO4↓ + 2H2O
LiH + H2O = LiOH + H2↑
H2 + S = H2S
3)H2S + 2NaOH(конц.) = Na2S + 2H2O
4)Na2S → NaOH → H2O → H2SO4 Na2S + H2O = NaHS + NaOH
Cr(OH)3 + 3NaOH = Na3CrO3 + 3H2O
Условия: при сплавлении
SO3 + H2O(хол.) = H2SO4(разб.)