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The average velocity of carbon dioxide at the temperature  \small T_1  and maximum probable velocity of carbon dioxide at the temperature \small T_2 is \small 9\times 10^4cms^{-1} . Calculate the values of  \small T_1  and  \small T_2 .

Option: 1

T_1=1682.5K and  T_2=2143.4K


Option: 2

T_1=1600K  and  T_2=2000K


Option: 3

T_1=21343K  and  T_2=1682.5K


Option: 4

T_1=168.2K  and  T_2=2143.4K


Answers (1)

best_answer

We have given
Average velocity = Most probable speed =9\times10^4cm/s  or  =9\times10^2m/s

We know:

Average \: \: velocity=\sqrt{\frac{8RT}{\Pi M}}

Thus,\: 9\times10^2=\sqrt{\frac{8\times 8.314\times T_1}{3.14\times44\times10^{-3}}}

Thus, T_1=1682.5K

Again, we know:

Most\: \: probable\: \: velocity=\sqrt{\frac{2\times 8.314 \times T_2}{44\times 10^{-3}}}

Thus, \: T_2=2143K

Therefore, Option(1) is correct

Posted by

seema garhwal

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