Chemistry - Ideal Gas Question with Solution | TestHub

For a given gas, raising the temperature flattens the Maxwell-Boltzmann curve and shifts the peak to higher speeds: graph (a) (T1 < T2, T2 curve lower and right-shifted) is correct and graph (b), with the labels interchanged, is wrong. At a fixed temperature, the heavier gas has the sharper, left-shifted peak: in graph (c) (M1 < M2) the heavier M2 is drawn broader and right-shifted, which is wrong; in graph (d) (M2 < M1) the lighter M2 is broader and right-shifted with its curve lying above M1 at higher speeds, which is correct. Hence (a) and (d).