Thermodynamics and Thermochemistry 1 Question 29
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32. 2 moles of an ideal gas expanded isothermally and reversibly from $1 \mathrm{~L}$ to $10 \mathrm{~L}$ at $300 \mathrm{~K}$. What is the enthalpy change?
======= ####32. 2 moles of an ideal gas expanded isothermally and reversibly from $1 \mathrm{~L}$ to $10 \mathrm{~L}$ at $300 \mathrm{~K}$. What is the enthalpy change?
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) $4.98 \mathrm{~kJ}$
(b) $11.47 \mathrm{~kJ}$
(c) $-11.47 \mathrm{~kJ}$
(d) $0 \mathrm{~kJ}$
(2004, 1M)
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Solution:
- In case of reversible thermodynamic process,
$$ \Delta H=n C_{p} \Delta T $$
$\therefore$ Process is isothermal, $\Delta T=0 \Rightarrow \Delta H=0$
