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The ratio of the molar amounts of H2S ne...

The ratio of the molar amounts of `H_2S` needed to precipitate the metal ions from 20 mL each of `1M Ca(NO_3)_2` and `0.5 M CuSO_4` is

A

`1:1`

B

`2:1`

C

`1:2`

D

indefinite

Text Solution

Verified by Experts

The correct Answer is:
B
(b)Moles of `Ca^(2+)` to be precipitated`=(20xx1)/(1000)=0.01` Hence molar amount of H.S will be in the ratio 2:1(Remember moles=Molarity x volume in ml/1000)
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