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NEET2009ChemistryHydrocarbonsActual

Nitrobenzene can be prepared from benzene by using a mixutre of conc HNO ₃ and conc. H ₂ SO ₄ . In the mixture, nitric acid acts as a/an :

Options

  1. Areducing agent
  2. Bacid
  3. Cbase
  4. Dcatalyst

Correct answer

C. base

Step-by-step solution

Key Idea Proton donor are acids and proton acceptor are bases. Conc. H ₂ SO ₄ and conc. HNO ₃ react in the following manner : aligned & base HNO ₃ + acid H ₂ SO ₄ H ₂ NO ₃⁺+ HSO ₄⁻ & H ₂ NO ₃⁺ nitronium ion NO ₂⁺ + H ₂ O & aligned Hence, in this reaction HNO ₃ acts as a base and H ₂ SO ₄ as an acid.

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