First slide

Relation between Delta H and Delta U

Question

For the reaction $A (s) + 2 B (g) \to C (g) + 3 D (l)$ , the value of $∆ H - ∆ E$ at 300 K will be

Easy

A

+600R
B

-300R
C

+300R
D

-600R

Solution

$∆ H = ∆ E + ∆ n_{g} RT; ∆ H - ∆ E = ∆ n_{g} RT; ∆ n_{g} = 1 - 2 = - 1; ∆ H - ∆ E = - 300 R;$

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