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Heat of Reaction

Temperature o...

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Temperature of a 5 mole of hydrogen gas decreases by 260 K while expanded through adiabatic process. Find the work done by the gas. What is the change in internal energy of the gas?

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Q. Assertion :In an adiabatic process change in internal energy of a gas in equal to work done on or by the gas in the process. Reason: Temperature of gas remains constant in an adiabatic process.

Q. During an adiabatic expansion of

5 m o l e s

of gas, the internal energy decreases by

75 J

. The work done during the process is

27^{\circ} C

two moles of an ideal monatomic gas occupy a volume

V

. The gas expands adiabatically to a volume

2 V

{(\frac{1}{2})}^{\frac{2}{3}} = 0.63

.

Q. In a flexible balloon,

2

S O_{2}

having initial volume of

1 k l

at a temperature of

27^{o} C

S O_{2}

is a non linear triatomic gas). The gas is first expanded to thrice its initial volume isobarically and then expanded adiabatically so as to attain its initial temperature. Assuming gas is ideal and

R = \frac{25}{3} J m o l^{- 1} K^{- 1}

. Choose the incorrect options.

Q. During the adiabatic expansion of two moles of a gas the internal energy of a gas is found to decrease by

2

joules. The work done during the process on the gas will be equal to:

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