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Date November 2018 Marks available 1 Reference code 18N.1.sl.TZ0.4
Level SL Paper 1 Time zone TZ0
Command term Question number 4 Adapted from N/A

Question

An antacid tablet containing 0.50 g of NaHCO3 (Mr = 84) is dissolved in water to give a volume of 250 cm3. What is the concentration, in mol dm−3, of HCO3 in this solution?

 

A.    0.250 × 84 0.50

B.    0.50 84 × 0.250

C.    250 × 84 0.50

D.    0.50 84 × 250

Markscheme

B

Examiners report

[N/A]

Syllabus sections

Core » Topic 1: Stoichiometric relationships » 1.3 Reacting masses and volumes
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