Q40 / 180 · AIIMS 2018 (26 May) · Chemistry

Which of the following is true for $\mathrm{N}_2 \mathrm{O}_5$ ?

  • A
    It is paramagnetic.
  • B
    It is an anhydride of $\mathrm{HNO}_2$.
  • C
    It is a brown gas.
  • Correct answer
    D
    It exists in solid state in the form of $\left[\mathrm{NO}_2^{+}\right]\left[\mathrm{NO}_3^{-}\right]$

Solution

$\mathrm{N}_2 \mathrm{O}_5$ is diamagnetic in nature. It is an anhydride of $\mathrm{HNO}_3$. It exists as colourless solid below $273 \mathrm{~K}$. $\mathrm{N}_2 \mathrm{O}_5$ exists as $\mathrm{NO}_2^{+} \mathrm{NO}_3^{-}$in solid form.

Hence, the correct answer is option: 'D'.

Relevant Questions