P_2O_3 + H_2O rightarrow XRed P_4 + text{alk | vedclass

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(C) $1$. The reaction of $P_2O_3$ with water is: $P_2O_3 + 3H_2O \rightarrow 2H_3PO_3$ ($X = H_3PO_3$,Phosphorous acid).$2$. The structure of $H_3PO_3

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$2, 4$

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(C) $1$. The reaction of $P_2O_3$ with water is: $P_2O_3 + 3H_2O \rightarrow 2H_3PO_3$ ($X = H_3PO_3$,Phosphorous acid).$2$. The structure of $H_3PO_3$ contains two $P-OH$ bonds.$3$. The reaction of $Red \ P_4$ with alkali is: $P_4 + 3NaOH + 3H_2O \rightarrow PH_3 + 3NaH_2PO_2$ ($Y = H_3PO_2$,Hypophosphorous acid).$4$. The structure of $H_3PO_2$ contains one $P-OH$ bond.$5$. Therefore,the number of $P-OH$ bonds in $X$ $(H_3PO_3)$ and $Y$ $(H_3PO_2)$ are $2$ and $1$ respectively. Note: The provided options do not match this result exactly. Re-evaluating the question,if $X$ is $H_3PO_3$ ($2$ $P-OH$) and $Y$ is $H_3PO_2$ ($1$ $P-OH$),the answer should be $2, 1$. Given the options,there might be a typo in the question or options. Based on standard chemistry,$H_3PO_3$ has $2$ $P-OH$ and $H_3PO_2$ has $1$ $P-OH$.

$P_2O_3 + H_2O \rightarrow X$
$Red \ P_4 + \text{alkali} \rightarrow Y$
$X$ and $Y$ are oxoacids of phosphorus. The number of $P-OH$ bonds in $X$ and $Y$ respectively is:

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$P_2O_3 + H_2O \rightarrow X$$Red \ P_4 + \text{alkali} \rightarrow Y$$X$ and $Y$ are oxoacids of phosphorus. The number of $P-OH$ bonds in $X$ and $Y$ respectively is: