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KCET2019Chemistryp Block Elements (Group 15, 16, 17 & 18)

In the reaction of gold with aquaregia, oxidation state of Nitrogen changes from

Options

  1. A( +5 ) to ( +2 )
  2. B( +3 ) to ( +1 )
  3. C(+4 ) to ( +2 )
  4. D(+6 ) to ( +4 )

Correct answer

A. ( +5 ) to ( +2 )

Step-by-step solution

(A) ( Au +4 H ⁺+ NO ₃⁺⁵ ⁻+4 Cl ⁻ AuCl ⁻ ⁻+ NO ⁺² O +2 H ₂ O )

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