试题与答案

反应4NH3+5O2=4NO+6H2O,在2L的密闭容器中进行,半分钟后NO的物

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题目:

反应4NH3+5O2=4NO+6H2O,在2L的密闭容器中进行,半分钟后NO的物质的量增加了3.0mol,则此反应的平均速率v(X)为[ ]

A.  v(O2)= 0.1mol·(L·s)-1        

B.  v(NO)= 0.05 mol·(L·s)-1

C.  v(H2O)=0.075 mol·(L·s)-1     

D.  v(NH3)=0.025 mol·(L·s)-1

答案:

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