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 5tjkc*,+rz ,rd*f pil dil fmij), (q9pk;/zl r5p cp3gzjotlo(.ute hydrochloric acid in a conical flask, the products are water, positive calcium i jzp3r; (9. (pg z/opmlcq5toklf) ji,ons 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 whenz h-wfi1 wrrpds6 x; 2br,9)ru a hydrogen ion is removed. The conjugate base is the )f,2u9xi6 wzwbr;p 1h rsdr-rrefore 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.
| 
