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Question

when pressure remaining contant at what temperature will the r.m.s speed of a gas molecules increase by 10 % of the r.m.s. speed at NTP?

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Solution

The temperature at which speed increases by 10% is 354.53 kelvin

We know that ,

V = √(3RT/M)

Hence,

V √T

=> V/V = √(T/T)

since the velocity increases by 10%, so,

V/V = 1.1 and

T = 293 k at NTP

Hence,

(T/T) = 1.1² = 1.21

=> T = 1.21 x 293 = 354.53 kelvin


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