DP Chemistry (first assessment 2025)

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Question 23M.1A.SL.TZ2.24

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ2.24
Level SL Paper 1A Time zone TZ2
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
23M.1A.SL.TZ2.24

What is the order of increasing conductivity for aqueous solutions of these acids and bases at equal concentrations?

  pKb
Methylamine 3.34
Ethanol 15.5
Phenylamine 9.13


A.  methylamine        <     ethanol                 <     phenylamine

B.  ethanol                <     phenylamine         <     methylamine

C.  methylamine        <     phenylamine         <     ethanol

D.  ethanol                <     methylamine        <     phenylamine

[1]

Markscheme

B