Question

In a chemical reaction,$\Delta H$=150KJ and $\Delta S$= 100JK${}^{-1}$ at 300K. $\Delta$G would be ________.

• A. Zero
• B. 300KJ
• C. 330KJ
• D. 120KJ

Answer 1

The correct option is D 120KJ

$\Delta G=\Delta H-T\Delta S$
$=150KJ-300\times 100\times {10}^{-3}KJ$
$=150-30KJ$
$\Delta G=120KJ$