本题目来源于试卷: Mechanisms of Chemical Change F.1 Proton Transfer Reactions，类别为 IB化学
[单选题]
When powdered calcium oxide is a ljgs,-(uhi 2 mdded to d h,pnee6a52 x*br jjjp3r+v,xilute hydrochloric acid in a conical flask, the products are water, pos 5bp ,j jxha2vr n6e+ ,3*xeprjitive calcium ions and negative chloride ions.
Which species is the conjugate base of hydrochloric acid in this reaction?
A. Calcium oxide
B. Water
C. Calcium ion
D. Chloride ion
参考答案: D
本题详细解析:
The conjugate base of HCl is the compound tp9(furr q+o ds4- 3sfproduced when a hydrogen ion is removed. The conjugate base is therefore the chrpo q+( f9-rf4 tdsu3sloride ion,$Cl^-$.
This question is hard as the student must link the names of chemicals to their formula and identify a conjugate base without the aid of an explicit reaction equation.
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