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Date November 2016 Marks available 1 Reference code 16N.1.hl.TZ0.28
Level HL Paper 1 Time zone TZ0
Command term Identify Question number 28 Adapted from N/A

Question

Which mixture is a buffer solution?

A.  25 cm3 of 0.10 mol dm-3 NH3 (aq) and 50 cm3 of 0.10 mol dm-3 HCl (aq)

B.  50 cm3 of 0.10 mol dm-3 NH3 (aq) and 25 cm3 of 0.10 mol dm-3 HCl (aq)

C.  25 cm3 of 0.10 mol dm-3 NaOH (aq) and 25 cm3 of 0.10 mol dm-3 HCl (aq)

D.  50 cm3 of 0.10 mol dm-3 NaOH (aq) and 25 cm3 of 0.10 mol dm-3 HCl (aq)

Markscheme

B

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 18: Acids and bases » 18.3 pH curves
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