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AP EAMCET201921 Apr 2019Evening ShiftChemistrySurface ChemistryActual

Sodium nitrite is reacted with H 2 SO 4 to form NaHSO 4 , HNO 3 , water and X . Gold is dissolved in aqua regia to form water, AuCl 4 - and Y . X and Y are respectively

Options

  1. ANO , NO 2
  2. BNO 2 , NO
  3. CNO , NO
  4. DN 2 O , NO

Correct answer

C. NO , NO

Step-by-step solution

Sodium nitrite reacts with sulphuric acid to form sodium sulphate, nitric acid and nitric oxide. 2 NaNO 2   +   H 2 SO 4   →   Na 2 SO 4   +   NO   +   H 2 O Gold reacts with aqua regia to form nitric oxide, water and a complex of gold. Au   +   HNO 3   + 3 HCl   → AuCl 4 -   +   NO   +   H 2 O

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