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A vessel contains 100 litres of a liquid X. Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 litres. If the external pressure is one atm, and 202.6 Joules of heat were supplied A vessel contains 100 litres of a liquid X. Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 litres. If the external pressure is one atm, and 202.6 Joules of heat were supplied

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$Δ U = 0, Δ H = 0$

$Δ U = + 202.6 J, Δ H = + 202.6 J$

$Δ U = - 202.6 J, Δ H = - 202.6 J$

$Δ U = 0, Δ H = + 202.6 J$

answer is D.

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Detailed Solution

$\begin{array}{l} w = - 1 \times 2 \times 101.3 = - 202.6 J \\ Δ H = Δ U + P Δ V; q = 202.6 J, Δ U = 0 \\ \Rightarrow Δ H = + 202.6 J \end{array}$

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