The difference between \(\Delta H\) and \(\Delta U\) (\(\Delta H-\Delta U\)), when the combustion of one mole of heptane(l) is carried out at a temperature \(T\), is equal to :
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- \(-4RT\)
- \(3RT\)
- \(-3RT\)
- \(4RT\)
The Correct Option is A
Solution and Explanation
\(\Delta n_g=7-11=-4\).
\(\Delta H-\Delta U=\Delta n_gRT=-4RT\).
Answer: (1) \(-4RT\)
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