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  4. A compound ' X ' upon reaction with H 2 O produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of CuSO 4 to give Cu 3 P 2 as one of the products. Predict the compound ' X '

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Q. A compound ' $X$ ' upon reaction with $H _2 O$ produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of $CuSO _4$ to give $Cu _3 P _2$ as one of the products. Predict the compound ' $X$ '

NEETNEET 2019The p-Block Elements - Part2

Solution:

$\underset{(X)}{Ca_3P_2} + H_2O \rightarrow Ca(OH)_2 + \underset{\text{Colourless gas} (y)}{PH_3} $
$CuSO_4 + \underset{(y)}{PH_3} \rightarrow Cu_3P_2 + H_2SO_4$
hence $X$ is $Ca_3P_2$ (Calcium phosphide)