單項(xiàng)選擇題已知反應(yīng)N2(g)+H2(g)=2NH3(g)的標(biāo)準(zhǔn)摩爾焓變?yōu)?92.22KJ·mol-1,下列哪一數(shù)據(jù)為NH3(g)的標(biāo)準(zhǔn)摩爾生成焓()

A.-46.11KJ·mol-1
B.-92.22KJ·mol-1
C.46.11KJ·mol-1
D.92.22KJ·mol-1


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