工业上制备纯硅反应的热化学方程式如下:      SiCl4(g)+2H2(g)===Si(

工业上制备纯硅反应的热化学方程式如下:

     SiCl4(g)2H2(g)===Si(s)4HCl(g);△H=+QkJ/mol(Q0)

某温度、压强下,将一定量的反应物通入密闭容器进行以上的反应(此条件下为可逆反应),下列叙述正确的是

A.反应过程中,若增大压强能提高SiCl4的转化率

B.若反应开始时SiCl41mol,则达到平衡时,吸收热量为QkJ

C.反应至4min时,若HCl的浓度为0.12mol/ L,则H2的反应速率为0.03mol/(L·min)

D.当反应吸收热量为0.025QkJ时,生成的HCl通入100mL1mol/LNaOH恰好反应

答案

D

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