2 moles of a gas undergoes a change in state from (2 bar, 40 l ) …

MCQ

$2\ moles$ of a gas undergoes a change in state from $(2\ bar, 40\ l )$ to $(5\ bar, 15\ l)$ at a constant temperature. If change in illternal energy is given by $35\ bar-lit$ then enthalpy change forthe process will be

A
$35\ bar-lit$
✓
$3\ kJ$
C
$4\ kJ$
D
$80\ bar-lit$

✓

Answer

Correct option: B.

$3\ kJ$

b
$\Delta H=\Delta U+P_{2} V_{2}-P_{1} V_{1}$

$=35+75-80=30 \,\mathrm{L}$ $bar$

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