p-Block elementsHard

Question

Which of the following statements is (are) correct ?

Options

A.Antimony on reaction with conc. HNO₃ gives antimonic acid.

B.Manganese on reaction with cold and dilute HNO₃ gives NO₂ gas.

C.HNO₂ disproportionate to give HNO₃ and NO

D.HNO₃ on reaction with P₄O₁₀ gives N₂O₅

Solution

(A) Sb + 5HNO₃ → H₃SbO₄ + 5NO₂ + H₂O
(B) Mn + 2HNO₃ → Mn(NO₃)₂ + H₂
(C) 3HNO₂ → HNO₃ + 2NO + H₂O
(D) 4HNO₃ + P₄O₁₀ 2N₂O₅ + 4HPO₃

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