H_3PO_2 xrightarrow{140^{circ}C} A xrightarro | vedclass

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(C) The thermal decomposition of hypophosphorous acid $(H_3PO_2)$ occurs in steps:$1$. At $140^{\circ}C$,$3H_3PO_2 \rightarrow 2H_3PO_3 + PH_3$ (Compo

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$HPO_3$

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(C) The thermal decomposition of hypophosphorous acid $(H_3PO_2)$ occurs in steps:$1$. At $140^{\circ}C$,$3H_3PO_2 \rightarrow 2H_3PO_3 + PH_3$ (Compound $A$ is $H_3PO_3$)$2$. At $250^{\circ}C$,$4H_3PO_3 \rightarrow 3H_3PO_4 + PH_3$ (Compound $B$ is $H_3PO_4$)$3$. At $316^{\circ}C$,$H_3PO_4 \rightarrow HPO_3 + H_2O$ (Compound $C$ is $HPO_3$)Thus,the final product $(C)$ is metaphosphoric acid,$HPO_3$.

$H_3PO_2$ $\xrightarrow{140^{\circ}C}$ $A$ $\xrightarrow{250^{\circ}C}$ $B$ $\xrightarrow{316^{\circ}C}$ $C$
Compound $(C)$ is

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$H_3PO_2$ $\xrightarrow{140^{\circ}C}$ $A$ $\xrightarrow{250^{\circ}C}$ $B$ $\xrightarrow{316^{\circ}C}$ $C$Compound $(C)$ is