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 g7700kki 6taktyblk2 -xa )mc oxide is added :+;aszam lul : to dilute hydrochloric acid in a conical flask, the products are water, positi aall;: sz+: muve 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 czf0x0qnjmf ;oc:n hi6qb5(-rompound produced when a hydrogen ion is removed. The conjugath qmf(;z0jfo:rqi -ncnx 6 0b5e base is therefore the chloride 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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