Question:

The aqueous solution/liquid that absorbs nitric oxide to a considerable extent is:

Updated On: Jun 6, 2022
  • lead nitrate
  • nitric acid
  • ferrous sulphate
  • sodium hydroxide
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The Correct Option is C

Solution and Explanation

The aqueous solution/liquid of ferrous sulphate $ (FeS{{O}_{4}}) $ absorbs nitric oxide to a considerable extent to give brown coloured
$ FeS{{O}_{4}}.NO $ .
This is the ring test for identifying the
$ NO_{3}^{-} $ radical. $ FeS{{O}_{4}}+NO\xrightarrow{{}}\underset{brown\,ring}{\mathop{FeS{{O}_{4}}NO}}\, $
$ (6FeS{{O}_{4}}+2HN{{O}_{3}}+2{{H}_{2}}S{{O}_{4}}\xrightarrow{{}} $ $ 3F{{e}_{2}}{{(S{{O}_{4}})}_{3}}+4{{H}_{2}}O+2NO\uparrow ) $
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Concepts Used:

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  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
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