How Much How Fast & How Far E.2 Rate of Chemical Change (id: ce741a4b1)

本题目来源于试卷: How Much How Fast & How Far E.2 Rate of Chemical Change，类别为 IB化学

[单选题]
The rate law for the reaction$2NO(g)$+$O_2(g)$→$2NO_2(g)$, is determined to be second-order with respect to $NO$ and first order with respect to$O_2$​.
Which of the mixtures below would create the fastest initial rate?

A.
B.
C.
D.


参考答案:  B


本题详细解析:
B

Diagram B contains 7$NO$and 4$O_2$,according to the rate law,$rate$=k$[NO]^2[O_2]$, the initial rate would be the fastest,$rate$=k$(7)^{2}\times(4)$=196k

A:$rate$=k$(4)^{2}\times(6)$=96k

C:$rate$=k$(6)^{2}\times(5)$=180k

D:$rate$=k$(5)^{2}\times(4)$=100k

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