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]
What statements about indi.glbw) /ntm v 6h..dc (/yrnoicas p8cw 8n1r.4 z/idklftors are correct?
|.Indicators are typically weak acids or weak bases
||.Indicators are different colours in acidic and alkaline conditions
|||.The midpoint of the colour change of an indicator occurs when [$HIn$] = [$In^-$]
A. I and II only
B. I and III only
C. II and III only
D. I, II, and III
参考答案: D
本题详细解析:
Indicators are weak acids or bases where the components -*klmts 4hzw(ycdn0 5 of their conjugate base/acidz c-y s kl4m50*nth(dw have different colours.
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