ABC26IN0192 · Main Group Elements
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR-NET 2014 · Marks: 2 · Difficulty: Easy
Reactions of elemental as with hot and conc. $\mathrm{HNO_3}$, and $\mathrm{H_2SO_4}$ respectively, give
(a)$\mathrm{As_4O_6}$ and $\mathrm{As_2(SO_4)_3}$
(b)$\mathrm{As(NO_3)_5}$ and $\mathrm{As_2(SO)_3}$
(c)$\mathrm{As_4O_6}$ and $\mathrm{H_3AsO_4}$
(d)$\mathrm{H_3AsO_4}$ and $\mathrm{As_4O_6}$
Answer
Explanation
The reason is that $\mathrm{HNO_3}$ is a better oxidising agent than $\mathrm{H_2SO_4}$; it also acts as a dehydrating agent.
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