White phosphorus on reaction with lime water gives calcium salt of an – InterviewSolution

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1.	White phosphorus on reaction with lime water gives calcium salt of an acid `(A)` along with a gas `(X)`. Which of the following is correct ?A. `(A)` on heating gives `(X)` and `O_2`B. The bond angle in `(X)` is less than that in case of ammonia.C. `(A)` is a disbasic acid.D. `(X)` is more basic than ammonia.
Answer» Correct Answer - B White phosphorous + Lime water rarr Calcium salt of an acid `(A) + Gas (X)` `2 P_4 + 8 Ca(OH)_2 + 6 H_2 O rarr 3 Ca(H_2 PO_2)_2 + 2 PH_3 (X)` `(A)` is `H_3 PO_2`, hypophosphorous acid. `(A)` is monobasic acid. `2 H_3PO_2 overset (Delta) rarr H_3 PO_4 + PH_3`.

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