The brown coloured gas is prepared by the action of concentrated nitric acid on copper is an equilibrium mixture of dinitrogen tetraoxide and nitrogen dioxide. mathrmN2 mathrmO4( mathrm~g) leftharpoons 2 mathrmNO2( mathrm~g) Which one of the following changes would result in a darkening of the colour?

Question

The brown coloured gas is prepared by the action of concentrated nitric acid on copper is an equilibrium mixture of dinitrogen tetraoxide and nitrogen dioxide. mathrmN2 mathrmO4( mathrm~g) leftharpoons 2 mathrmNO2( mathrm~g) Which one of the following changes would result in a darkening of the colour? (A) Increase in temperature (B) Increase in pressure (C) Addition of a catalyst (D) Removal of dinitrogen tetra oxide by liquefaction

Tardigrade Admin · Accepted Answer

N2O4(.g.)leftharpoons2NO2(.g.) Here brown colour is formed due to NO2 gas. Darkening of colour is possible when more NO2 is formed when temperature is increased the equilibrium shifted to the right side as it is an endothermic process.

Q. The brown coloured gas is prepared by the action of concentrated nitric acid on copper is an equilibrium mixture of dinitrogen tetraoxide and nitrogen dioxide.

$N_{2} O_{4} (g) ⇌ 2 NO_{2} (g)$

Which one of the following changes would result in a darkening of the colour?

Increase in temperature

Increase in pressure

Addition of a catalyst

Removal of dinitrogen tetra oxide by liquefaction

$N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$

Here brown colour is formed due to $N O_{2}$ gas. Darkening of colour is possible when more $N O_{2}$ is formed when temperature is increased the equilibrium shifted to the right side as it is an endothermic process.

Q. The brown coloured gas is prepared by the action of concentrated nitric acid on copper is an equilibrium mixture of dinitrogen tetraoxide and nitrogen dioxide. N2​O4​( g)⇌2NO2​( g) Which one of the following changes would result in a darkening of the colour?