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(B) When white phosphorus $(P_4)$ is heated with concentrated $NaOH$ in an inert atmosphere of $CO_2$,it undergoes disproportionation to form phosphin

Vedclass · Accepted Answer

$NaH_2PO_2, H_2SO_4$

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(B) When white phosphorus $(P_4)$ is heated with concentrated $NaOH$ in an inert atmosphere of $CO_2$,it undergoes disproportionation to form phosphine $(PH_3)$ and sodium hypophosphite $(NaH_2PO_2)$.$P_4 + 3NaOH + 3H_2O \rightarrow PH_3(A) + 3NaH_2PO_2(B)$When phosphine $(A)$ is bubbled into aqueous $CuSO_4$ solution,it forms copper phosphide $(Cu_3P_2)$ and sulfuric acid $(H_2SO_4)$.$3CuSO_4 + 2PH_3 \rightarrow Cu_3P_2 + 3H_2SO_4(C)$Therefore,$B$ is $NaH_2PO_2$ and $C$ is $H_2SO_4$.

List-$I$ (Family)	List-$II$ (Symbol of Element)
$A$. Pnictogen (group $15$)	$I$. $Ts$
$B$. Chalcogen	$II$. $Og$
$C$. Halogen	$III$. $Lv$
$D$. Noble gas	$IV$. $Mc$

White phosphorus is heated with concentrated $NaOH$ in $CO_2$ atmosphere to form a gas $A$ and compound $B$. When $A$ is bubbled into aqueous $CuSO_4$ solution,copper phosphide and $C$ are formed. $B$ and $C$ are respectively:

Similar Questions

Match the List-$I$ with List-$II$.
List-$I$ (Family) List-$II$ (Symbol of Element)
$A$. Pnictogen (group $15$) $I$. $Ts$
$B$. Chalcogen $II$. $Og$
$C$. Halogen $III$. $Lv$
$D$. Noble gas $IV$. $Mc$

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