Q43 / 150 · MHT CET 2023 (10 May Shift 1) · Chemistry

What is change in internal energy when system releases $8 \mathrm{~kJ}$ of heat and performs $660 \mathrm{~J}$ of work on the surrounding?

  • A
    $-7340 \mathrm{~J}$
  • B
    $-5400 \mathrm{~J}$
  • Correct answer
    C
    $-8660 \mathrm{~J}$
  • D
    $-1212 \mathrm{~J}$

Solution

$\Delta \mathrm{U}=\mathrm{Q}+\mathrm{W}=-8000 \mathrm{~J}-660 \mathrm{~J}=-8660 \mathrm{~J}$

Hence, the correct answer is option: 'C'.

Relevant Questions