Предмет: Химия, автор: ydx

20 баллов!!! Составьте ионно-молекулярные и молекулярные уравнения гидролиза,
происходящие при смешивании следующих пар растворов: а) нитрата хрома (Ш) и сульфида натрия; б) сульфата меди (II) и карбоната калия.

Ответы

Автор ответа: huliganka
1

1) 2Cr(NO3)3 + 3Na2S+6HOH -> 2Cr(OH)3↓ + 3H2S↑ +6 NaNO3

2Cr(3+) + 6NO3(-) + 6Na(+) + 3S(2-) + 6HOH -> 2Cr(OH)3↓+3H2S↑+ 6Na(+) +

+ 6NO3(-)

     2Cr(3+) + 3S(2-) + 6HOH -> 2Cr(OH)3↓+ 3H2S↑

2) CuSO4 + K2CO3 +HOH->Cu(OH)2↓+ CO2↑+ K2SO4

Cu(2+) + SO4(2-) + 2K(+) + CO3(2-) + HOH -> Cu(OH)2↓+ CO2↑+2K(+) + +SO4(2-)

          Cu(2+)+ CO3(2-) + HOH -> Cu(OH)2↓+ CO2↑


ydx: спасибо солнышко
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