一定条件下，将NO2与SO2以体积比1:2置于密闭容器中发生NO2(g)+SO2(g)
SO3(g)+NO(g）的可逆反应，下列能说明反应达到平衡状态的是（ ）
| A．体系压强保持不变 | B．混合气体颜色保持不变 |
| C．SO3和NO的体积比保持不变 | D．每消耗1 mol SO3的同时生成1 mol NO2 |
相关试题
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| A．most | B．more | C．less | D．little |
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| A．was | B．had been | C．has been | D．will be |
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| A．someone | B．anyone | C．not one | D．no one |
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| A．said | B．to say | C．saying | D．being said |
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