题目

某温度下,反应SO2(g)+ 1/2O2(g) SO3 (g) 的平衡常数K1=50,在同一温度下,反应2SO3(g) 2SO2(g) + O2(g)的平衡常数K2的值为( )A. 2500 B. 100 C. 4×10-4 D. 2×10-2 答案:【答案】C【解析】某温度时,反应SO2(g)+O2(g) SO3(g)的平衡常数K==50,在同一温度下,反应2SO3(g) 2SO2(g)+O2(g)的平衡常数K1=,K1=1/k2=1/502=4×10-4,故选C。1.       he was speaking,everybody listened carefully.2. The thieves ran away       they caught sight of the police.
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