The P Block Elements Ques 18

18. $P_2 O_5$ is heated with water to give

[1991]

(a) Hypophosphorous acid

(b) Phosphorous acid

(c) Hypophosphoric acid

(d) Orthophosphoric acid

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Solution:

  1. (d) $P_2 O_5$ have great affinity for water. The final product is orthophosphoric acid.