NEET · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
A gas is allowed to expand in a well insulated container against a constant external pressure of \(2.5\ atm\) from an initial volume of \(2.50\ L\) to a final volume of \(4.50\ L.\) The change in internal energy \(\Delta U\) of the gas in joules will be .............. \(\mathrm{J}\)
- A \(-500\)
- B \(-505\)
- C \(+505\)
- D \(1136.25\)
Answer & Solution
Correct Answer
(B) \(-505\)
Step-by-step Solution
Detailed explanation
Work done in Irreversible process \(\mathrm{W}=-\mathrm{P}_{\mathrm{ext}} \Delta \mathrm{V}\)
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