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 ox 4pg0x+xu xo6 vide ipxdh(u z7o1nxok.s73hz- q7 is added to dilute hydrochloric acid in a conical flask, the products are water, positive calcium o77ki31qo xp z. h-d7nxszu(hions 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 produced when a v- xha-,w)lln ;uk5a39 up iymhydrogen ion is removed. The conjugate base is therefore the chlh,uw vix;p ul)k -5aymla-93noride 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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