T ℃时,在1 L的密闭容器中充入2 mol CO 2 和6 mol H 2 ,一定条件下发生反应: CO 2 (g)+3H 2 (g) CH 3 OH(g)+H 2 O(g) △ H =-49.0 kJ·mol -1 测得H 2 和CH 3 OH(g)的浓度随时间变化如下图所示。下列说法不正确的是 时间 c (H 2 )/mol·L -1 c (CH 3 OH)/mol·L -1 v (正)和 v (逆) 比较 t 0 6 0 ? t 1 3 1 v (正)= v (逆)
A.
t 0 ~t 1 时间内 υ (H 2 )=3 /(t 1 - t 0 ) mol·(L·min) -1
B.
t 1 时,若升高温度或再充入CO 2 气体,都可以提高H 2 的转化率
C.
t 0 时, v (正)> v (逆)
D.
T ℃时,平衡常数 K = 1/27,CO 2 与H 2 的转化率相等
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举一反三
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A.
A listing of all open accounts and their balances.
B.
A chronological record of transactions.
C.
A listing of all accounts used to record the business transactions.
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