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Date	May 2014	Marks available	1	Reference code	14M.1.hl.TZ2.29
Level	HL	Paper	1	Time zone	TZ2
Command term		Question number	29	Adapted from	N/A

Question

What is the expression for the ionic product constant of water, ${K_{\text{w}}}$ ?

A. ${K_{\text{w}}} = {K_{\text{a}}} \times {K_{\text{b}}}$

B. ${K_{\text{w}}} = {K_{\text{a}}} + {K_{\text{b}}}$

C. ${K_{\text{w}}} = \frac{{{K_{\text{a}}}}}{{{K_{\text{b}}}}}$

D. ${K_{\text{w}}} = {K_{\text{a}}} - {K_{\text{b}}}$

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Syllabus sections

Additional higher level (AHL) » Topic 18: Acids and bases » 18.2 Calculations involving acids and bases

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