Redox and Equivalent ConceptHard
Question
The ratio of amounts of H2S needed to precipitate all the metal ions from 100 ml of 1 M-AgNO3 and 100 ml of 1 M-CuSO4 is
Options
A.1:2
B.2:1
C.zero
D.infinite
Solution
$2Ag^{+} + H_{2}S \rightarrow Ag_{2}S \downarrow + 2H^{+}$
$Cu^{+} + H_{2}S \rightarrow CuS \downarrow + 2H^{+}$
∴ Ratio of amount of H2S = 1 2:
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