Identify A, B and C in the following.

A-

{C l}_{2} O_{7}

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B-

{H P O}_{3}

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C-

{K C l O}_{4}

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A-

{C l}_{2} O_{3}

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B-

{H_{3} P O}_{3}

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Solution

The correct options are
A A- ${C l}_{2} O_{7}$
B B- ${H P O}_{3}$
C C- ${K C l O}_{4}$
$H C l O_{4}$ reacts with $P_{2} O_{5}$ to form $C l_{2} O_{7} (A)$ and $H P O_{3} (B)$ .
$2 H C l O_{4} + P_{2} O_{5} \to C l_{2} O_{7} A + 2 H P O_{3} B$ .
$C l_{2} O_{7} (A)$ reacts with KOH to form $K C l O_{4} (C)$ and water.
$C l_{2} O_{7} A + 2 K O H \to 2 K C l O_{4} C + H_{2} O$
$H C l O_{4}$ reacts with KOH to form $K C l O_{4} (C)$ and water.
$H C l O_{4} + K O H \to K C l O_{4} C + H_{2} O$
Thus A is $C l_{2} O_{7}$ , B is $H P O_{3}$ and C is $K C l O_{4}$

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