在反应A+3B═2C+3D中，已知A和B的相对分子质量之比为5：6，2.5g A与一定量的B恰好完全反应，生成3.5g D，则反应中B和C的质量比为_刷题宝

题干

在反应A+3B═2C+3D中，已知A和B的相对分子质量之比为5：6，2.5g A与一定量的B恰好完全反应，生成3.5g D，则反应中B和C的质量比为（　　）

A：2：1

B：9：8

C：3：2

D：4：7

上一题下一题 0.0难度选择题更新时间:2018-02-27 07:06:53

答案(点此获取答案解析）

B

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