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 added to dilute hyd f2ht 9 n5snz:;1 nl(ytau1rvjkkk 0w:rochloric acid ioi3*n p3,otw in a conical flask, the produc 3 *ii3twnoop, ts are water, positive 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 produced wheq(*pt1q.ejl4s adw ,d1 *zo dnn a hydrogen ion is removed. The conjupze 11nw*ja(dq, tl4o dqs*.d gate 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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