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Q.

PH₃ can be obtained by the reaction of :

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a

Ca₃P₂ with dil. HCI

b

all of the above

c

Ca₃P₂ with water

d

white phosphorus with concentrated and hot NaOH (aq)

answer is D.

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Detailed Solution

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${Ca}_{3} P_{2} + 6 HCl \overset{}{\to} 3 {CaCl}_{2} + 2 {PH}_{3}$

${Ca}_{3} P_{2} + 6 H_{2} O \overset{}{\to} 3 Ca {(OH)}_{2} + 2 {PH}_{3}$

$P_{4} + 3 NaOH + 3 H_{2} O \overset{}{\to} {PH}_{3} + 3 {NaH}_{2} {PO}_{2}$

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