First slide

Gibb's Helmholtz equation

Question

Which of the following reaction is spontaneous at room temperature

Easy

A

$\large {I_2} + \,{H_2}O\, \to$
B

$2{H_2} + {O_2}\,\xrightarrow{{Pt}}2{H_2}O$
C

${N_2} + {O_2}\, \to \,2NO$
D

$2HCl\, \to \,{H_2}\, + \,C{l_2}$

Solution

Combustion reactions are spontaneous.

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