Question

(d) H2S gas is passed through copper sulphate solution.What do u obderve
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Answer 1

H2S+CuSO4--›H2SO4+CuS

Answer 2

Here's your answer

When we'll pass H2S gas through CuSO4 solution then ---

H2S + CuSO4 -----> H2SO4 +CuS

CuS is of dark purple (indigo) or black in colour

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