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水煤气是重要燃料和化工原料，可用水蒸气通过炽热的炭层制得： C （s） + H 2 O（g） CO （g） +H 2 （g） △H （1）写出该反应的平衡常数表：K=_______，已知：K 300℃ 350℃，则该反应是_______热反应。 （2）上述反应达到平衡后,增加H 2 O(g)的量，则C(s)的物质的量_______（增大、减小、不变） （3）下列说法一定能判断如上反应达平衡的是__________ A．消耗1mol H 2 O（g）同时生成1mol H 2 B．容器内混合气体的总质量不变 C．恒温恒容时容器内气体的压强不变 D．H 2 O（g） 、CO （g） 、H 2 （g）三种气体的浓度比为1︰1︰1. E．恒温恒容时容器内气体的密度不变 （4）上述反应在t 0 时刻达到平衡，在t1时刻改变某一条件后正反应速率（ν正）随时间的变化如下图所示，填出对应的编号。 ① 缩小容器体积_________； ② 降低温度 ____________。 （5）一定温度下，三个容器中均进行着上述反应，各容器中炭足量，其它物质的物质的量浓度及正逆反应速率关系如下表所示。请填写表中①②相应的空格。
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