在一体积可变的密闭容器中，加入一定量的X、Y，发生反应mX(g)
nY(g)，ΔH＝Q kJ/mol。反应达到平衡时，Y的物质的量浓度与温度、容器体积的关系如下表所示：
下列说法正确的是（ ）
| A．m>n |
| B．温度不变，压强增大，Y的质量分数减少 |
| C．Q<0 |
| D．体积不变，温度升高，平衡向逆反应方向移动 |
相关试题
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
If you leave the club, you will not be_____back in .
| A．received | B．admitted | C．turned | D．moved |
粤公网安备 44130202000953号