First slide

Chemical Equilibrium

Question

$If K_{1} and K_{2} are the equilibrium constants at temperature T_{1} and T_{2} and T_{2} > T_{1} then$

Moderate

A

When $Δ H = 0; K_{2} = K_{1}$
B

When $Δ H > 0; K_{2} > K_{1}$
C

When $Δ H < 0; K_{2} < K_{1}$
D

When $Δ H > 0; K_{2} < K_{1}$

Solution

Observations can be made from Vant Hoff $E q^{n}$
$l n \frac{k_{2}}{k_{1}} = \frac{Δ H}{R} [\frac{1}{T_{1}} - \frac{1}{T_{2}}]$

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