Which of the following reaction/(s) is/are correct?

K O H (d i l u t e d) + H_{3} P O_{4} (c o n c .) \to K H_{2} P O_{4} + H_{2} O

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2 K O H (d i l u t e d) + H_{3} P O_{4} (d i l u t e d) \to K_{2} H P O_{4} + 2 H_{2} O

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3 K O H (c o n c .) + H_{3} P O_{4} (d i l u t e d) \to K_{3} P O_{4} + 3 H_{2} O

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All of the above

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Solution

The correct option is D All of the above
All of the following reactions are correct.
$K O H (d i l u t e d) + H_{3} P O_{4} (c o n c .) \to K H_{2} P O_{4} + H_{2} O$ .
$2 K O H (d i l u t e d) + H_{3} P O_{4} (d i l u t e d) \to K_{2} H P O_{4} + 2 H_{2} O$ .
$3 K O H (c o n c .) + H_{3} P O_{4} (d i l u t e d) \to K_{3} P O_{4} + 3 H_{2} O$ .

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P_{4} + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} + P H_{3}

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H_{3} P O_{4}

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