A gas A trimerizes to a very small extent at a given temperature: 3A(g) ⇌ A 3 (g), with K c = 0.16 L 2 mol -2 . The reaction is started with one mole of A in a closed vessel of capacity 4.0 L. The val

Question

A gas A trimerizes to a very small extent at a given temperature: 3A(g) ⇌ A 3 (g), with K c = 0.16 L 2 mol -2 . The reaction is started with one mole of A in a closed vessel of capacity 4.0 L. The value of PV/RT at equilibrium is

TestHub · Accepted Answer

Let x mol of A 3 form, so A left is 1 - 3x and total moles are 1 - 2x K c = (x/V)/((1-3x)/V) 3 The extent is very small, so 1 - 3x ≈ 1 and K c = x V 2 x = 0.16/(4.0) 2 = 0.010 mol PV/RT = n total = 1 - 2x = 1 - 0.020 PV/RT = 0.98 This is option (d).

Chemistry - Chemical Equilibrium Question with Solution | TestHub

Options:

Doubts & Discussion