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For isothermal reversible expansion w = q = nRT × 2.303 log V2/V1 = 2RT × 2.303 log 20/2

1. w = q = nRT × 2.303 log V2/V1
2. w = q = nRT × 2.303 log 20/2
3. w = q = nRT × 2.303 log 2
4. w = q = nRT × 2.303 log 10

Correct answer: w = q = nRT × 2.303 log 10

Solution

The given equation simplifies to w = q = nRT × 2.303 log (20/2) = nRT × 2.303 log 10, as log (20/2) equals log 10.

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