一定温度下,反应N2(g)+3H2(g) 2NH3(g)达到化学平衡状态的标志是: ( )A.N2,H2和NH3的物质的量分数不再改变 B.c(N2)∶c(H2)∶c(NH3)=1∶3∶2 C.N2与H2的物质的量之和是NH3的物质的量2倍D N2,H2和N
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![一定温度下,反应N2(g)+3H2(g) 2NH3(g)达到化学平衡状态的标志是: ( )A.N2,H2和NH3的物质的量分数不再改变 B.c(N2)∶c(H2)∶c(NH3)=1∶3∶2 C.N2与H2的物质的量之和是NH3的物质的量2倍D N2,H2和N](/uploads/image/z/3439350-54-0.jpg?t=%E4%B8%80%E5%AE%9A%E6%B8%A9%E5%BA%A6%E4%B8%8B%2C%E5%8F%8D%E5%BA%94N2%EF%BC%88g%EF%BC%89%2B3H2%28g%29+2NH3%28g%29%E8%BE%BE%E5%88%B0%E5%8C%96%E5%AD%A6%E5%B9%B3%E8%A1%A1%E7%8A%B6%E6%80%81%E7%9A%84%E6%A0%87%E5%BF%97%E6%98%AF%EF%BC%9A%E3%80%80%EF%BC%88%E3%80%80%E3%80%80%EF%BC%89A.N2%2CH2%E5%92%8CNH3%E7%9A%84%E7%89%A9%E8%B4%A8%E7%9A%84%E9%87%8F%E5%88%86%E6%95%B0%E4%B8%8D%E5%86%8D%E6%94%B9%E5%8F%98+B.c%28N2%29%E2%88%B6c%28H2%29%E2%88%B6c%28NH3%29%EF%BC%9D1%E2%88%B63%E2%88%B62+C.N2%E4%B8%8EH2%E7%9A%84%E7%89%A9%E8%B4%A8%E7%9A%84%E9%87%8F%E4%B9%8B%E5%92%8C%E6%98%AFNH3%E7%9A%84%E7%89%A9%E8%B4%A8%E7%9A%84%E9%87%8F2%E5%80%8DD+N2%2CH2%E5%92%8CN)
一定温度下,反应N2(g)+3H2(g) 2NH3(g)达到化学平衡状态的标志是: ( )A.N2,H2和NH3的物质的量分数不再改变 B.c(N2)∶c(H2)∶c(NH3)=1∶3∶2 C.N2与H2的物质的量之和是NH3的物质的量2倍D N2,H2和N
一定温度下,反应N2(g)+3H2(g) 2NH3(g)达到化学平衡状态的标志是: ( )
A.N2,H2和NH3的物质的量分数不再改变
B.c(N2)∶c(H2)∶c(NH3)=1∶3∶2
C.N2与H2的物质的量之和是NH3的物质的量2倍
D N2,H2和NH3的分子个数之比为1∶3∶2
理由
一定温度下,反应N2(g)+3H2(g) 2NH3(g)达到化学平衡状态的标志是: ( )A.N2,H2和NH3的物质的量分数不再改变 B.c(N2)∶c(H2)∶c(NH3)=1∶3∶2 C.N2与H2的物质的量之和是NH3的物质的量2倍D N2,H2和N
A
化学平衡即正逆反应速率相等,N2,H2和NH3的物质的量分数不再改变 即表明随时间的推移反应各组分的量不变,即达到平衡