某反应的速率方程式是 v = k [ c (A)] x [ c (B)] y ,当 A 的浓度减少 50% 时, v 降低至原来的 1/4 ,当 B 的浓度增大 2 倍时, v 增大 1.41 倍,则 x = 2 , y = 0.7
A.
正确
B.
错误
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