Statement I: On increasing the temperature, the fraction of molecules possessing most probable speed — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

As temperature increases, the Maxwell-Boltzmann distribution curve flattens and broadens, meaning the fraction of molecules at the most probable speed decreases (Statement I is incorrect). The most probable speed u_mp = √(2RT/M) increases with temperature (Statement II is correct).