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Nitrous Acid Quiz
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Nitrous Acid Quiz

Created by
@AstoundingJoy

Questions and Answers

At room temperature, which form of the planar nitrous acid molecule predominates in the gas phase?

  • Syn form
  • Both forms equally
  • No specific form predominates
  • Anti form (correct)

    • How is nitrous acid usually generated?

  • By neutralizing nitric acid with a base
  • By reacting nitric acid with water
  • By direct synthesis from nitrogen and oxygen
  • By acidification of aqueous solutions of sodium nitrite with a mineral acid (correct)

    • What is the molecular formula of nitrous acid?

  • NH2O2
  • H2NO2
  • NO2H
  • HNO2 (correct)

    • What are the resulting diazonium salts used for?

    <p>Azo coupling reactions to give azo dyes</p> Signup and view all the answers

    How is nitrous acid decomposed rapidly?

    <p>Free nitrous acid or concentrated solutions</p> Signup and view all the answers

    What is the main use of nitrous acid?

    <p>To make diazonium salts from amines</p> Signup and view all the answers

    What is the predominant form of the planar nitrous acid molecule in the gas phase at room temperature?

    <p>Anti form</p> Signup and view all the answers

    How is nitrous acid usually generated?

    <p>By acidification of aqueous solutions of sodium nitrite with a mineral acid</p> Signup and view all the answers

    What happens to free nitrous acid or concentrated solutions?

    <p>They are unstable and decompose rapidly</p> Signup and view all the answers

    What is the chemical equation for the production of nitrous acid by dissolving dinitrogen trioxide in water?

    <p>$N2O3 + H2O \rightarrow 2 HNO2$</p> Signup and view all the answers

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