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Date May 2015 Marks available 1 Reference code 15M.1.hl.TZ1.1
Level HL Paper 1 Time zone TZ1
Command term Question number 1 Adapted from N/A

Question

4.0 g of solid sodium hydroxide is added to \({\text{0.10 d}}{{\text{m}}^{\text{3}}}\) of \({\text{1.0 mol d}}{{\text{m}}^{ - 3}}\) aqueous sulfuric acid.
\[{\text{2NaOH(s) + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{(aq) }} \to {\text{ N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{(aq) + 2}}{{\text{H}}_{\text{2}}}{\text{O(l)}}\]
Which statement is correct?

A.     Neither reactant is in excess.

B.     0.10 mol \({\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) is formed.

C.     Excess \({{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) remains in solution.

D.     Excess NaOH remains in solution.

Markscheme

C

Examiners report

[N/A]

Syllabus sections

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