试题与答案

(12分)在一定温度下,向一2L固定容积的密闭容器中通入20 molN2和60

题型:填空题

题目:

(12分)在一定温度下,向一2L固定容积的密闭容器中通入20 molN2和60 molH2,经过5分钟后,N2的浓度是5mol∕L,又过了5分钟 N2、H2、NH3的浓度不再变化,此时NH3的浓度是14 mol∕L,达到平衡后共放出QKJ的热量,试完成下列问题:

⑴前5分钟用H2表示的化学反应速率(                    );

⑵反应达到平衡后N2的转化率(                 );

⑶表示该温度下合成氨的化学平衡常数的表达式为(              );

⑷若平衡后再增大压强,化学平衡向(        )方向移动(填“正”“逆”“不”);

⑸该温度下反应的热化学方和式为(               )(用含Q的式子表示);

⑹在该温度下,向另一2L固定容积的密闭容器中通入N2 5 mol、H215 mol、NH330 mol,反应达到平衡后H2的浓度是(                )。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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