Select the correct option(s) for an ideal gas.

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Most probable speed is more for ${Cl}_{2}$ than $H_{2}$ at same temperature

Fraction of particles moving with most probable speed are more for ${Cl}_{2}$ than $H_{2}$ under similar conditions of T, P and V

Fraction of particles moving with most probable speed increases with increase in temperature

Most probable speed increases with increase is temperature

answer is A, C.

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Detailed Solution

The relation of speed increasing as temperature rises is, $\sqrt{\frac{2 RT}{M}}$

Under the same conditions for temperature, pressure and volume, chlorine has a higher percentage of particles travelling at their most likely speed than hydrogen gas.

The relationship between the speed and molar mass is inverse. Greater molar mass results in lower most likely speed and higher proportion of molecules travelling at most likely speed.

Thus, the correct answer is A, C.

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