Answers: 3
for the reaction is -198.762 J/K
![\Delta S^{0}=[2moles\times S^{0}(NH_{3})_{g}]-[1mole\times S^{0}(N_{2})_{g}]-[3\times S^{0}(H_{2})_{g}]](/tpl/images/0189/5076/f0e35.png)
represents standard entropy.
, 
and 
![\Delta S^{0}=[2\times 192.45]-[1\times 191.61]-[3\times 130.684]J/K=-198.762J/K](/tpl/images/0189/5076/4d0f0.png)
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