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 abouyoi/j30paa5u:w5tf s:hv 9 tv,cpnm*c)bs se di vgb*m91(: zd5;b hzt indicators 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 of their conjuo c0y9 r7rj9sxpe,n) mgate base/acid have different co7jcry99sp ,xem0r)on lours.
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