Question

2. In which gas phase reaction below will the volume stay the same when the absolute temperature is doubled?

I.A2 +B2 →AB2

II.A2 +B2 → 2AB

III. 2AB2 → A2 +2B2

IV.3A+B→A3B

(1) I only

(2) II only

(3) III only

(4) IV only

(5) II and IV

Answer 1

I.A +B₂ AB₂

Here, volume stays the same when the absolute temperature is doubled

II.A₂ +B₂ 2AB

Here, volume doubles when the absolute temperature is doubled

III. 2AB₂ A₂ +2B₂

Here, volume triples when the absolute temperature is doubled

IV.3A+B A₃B

Here, some other volume change happens when the absolute temperature is doubled