82 litres of carbon dioxide are produced at a pressure of 1 atm by the action of acid on a metal carbonate. The work done by the gas (in calories) in pushing back the atmosphere is (R = 0.082 litre-atm deg-1mol-1)

1. 1000

2. 820

3. 1640

4. 2000

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Concept Questions :-

First Law of Thermodynamics

The work done by a gas is given by

W= $P∆V$

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