Chemistry - Complete P-block Question with Solution | TestHub

ChemistryComplete P-blockp-Block 15,16Easy2 min

ChemistryEasysingle choice

Upon long standing, concentrated $HNO_{3}$

Options:

Answer:

Solution:

Explanation:

Concentrated nitric acid (HNO₃) decomposes upon standing, especially when exposed to light, producing nitrogen dioxide (NO₂), which dissolves in the solution, giving it a yellow-brown color. The reaction is:

$4 H N O_{3} \to 2 H_{2} O + 4 N O_{2} + O_{2}$

NO₂ is responsible for the color change.

Stream:JEESubject:ChemistryTopic:Complete P-blockSubtopic:p-Block 15,16

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