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Questions  

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T1KtoT2K is

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By Expert Faculty of Sri Chaitanya
a
34NakBT2−T1
b
34NakBT2T1
c
38NakBT2−T1
d
32NakBT2−T1

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detailed solution

Correct option is C

As here volume of the gas remains constant, therefore the amount of heat energy required to raise the temperature of the gas is ΔQ=nCvΔTHere, Number of moles, n=14CV=32R        ∵  He  is  a  monatomic ΔT=T2−T1 ∴  ΔQ=1432RT2−T1 =38NakBT2−T1               ∵kB=RNa

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Similar Questions

100 mol of an ideal gas is heated from 10° to 20°C keeping its (i) volume constant (ii) pressure constant.
Let ΔUa and ΔUb denote the change in the internal energy of the gas due to process (i) and (ii),
respectively. Then, which of the following shall be true?

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