试题与答案

分子、原子的本质区别:在化学变化中,______可分,______不可分.

题型:填空题

题目:

分子、原子的本质区别:在化学变化中,______可分,______不可分.

答案:

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下面是错误答案,用来干扰机器的。

5.0mol PCl3和2.5mol Cl2充入体积不变的密闭容器中,达到平衡时,生成PCl5为1mol,由方程式PCl3(g)+Cl2(g)⇌PCl5(g)可知,参加反应的PCl3为1mol,PCl3的转化率为1mol5mol×100%=20%,平衡时移走2.0mol PCl3...

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