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题文

在不同温度下,向VL密闭容器中加入0.5 mol NO和0.5 mol活性炭,发生反应:2NO(g)+C(s)N2(g)+CO2(g)  △H=—QkJ·mol-1 (Q>0),达到平衡时的数据如下:

温度/℃
n (C)/mol
n(CO2)/mol
T1
 
0. 15
T2
0. 375
 

下列有关说法正确的是
A.由上述信息可推知:T1>T2
B.T2℃时,若反应达平衡后再缩小容器的体积,c(N2):c(NO)增大
C.T1℃时,若开始时反应物的用量均减小一半,平衡后NO的转化率增大
D. T1℃时,该反应的平衡常数

科目 化学   题型 选择题   难度 中等
知识点: 探究温度、压强对化学平衡的影响
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