Answered

Given the reaction system in a closed container at equilibrium and at a temperature of 298 K:

N2O4(g) <==>2NO2(g)

The measurable quantities of the gases at equilibrium must be

(1) decreasing (3) equal

(2) increasing (4) constant

Verified Answer :

Constant. The concentrations must be constant and the rates must be equal.

JannetPalos

Answer:

The measurable quantities of the gases at equilibrium must be constant

Explanation:

Measurable quantities for the gases at equilibrium includes rate of formation of \(NO_{2}\), rate of formation of \(N_{2}O_{4}\), pressure of \(NO_{2}\) and pressure of \(N_{2}O_{4}\).

At equilibrium, rate of forward reaction is equal to rate of reverse reaction.

Rate of forward reaction infers rate of formation of \(NO_{2}\) and rate of backward reaction infers rate of formation of \(N_{2}O_{4}\).

As rate of formations from both direction are equal therefore pressure of both gaseous species remains constant.

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