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6.2 Quantitative analysis

6.2 Quantitative analysis

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Question 44

Lithium hydroxide solution reacts with dilute hydrobromic acid:

LiOH(aq)+HBr(aq)→LiBr(aq)+H2O(l) \text{LiOH(aq)} + \text{HBr(aq)} \rightarrow \text{LiBr(aq)} + \text{H}_2\text{O(l)} LiOH(aq)+HBr(aq)→LiBr(aq)+H2​O(l)

45.0 cm3 of 0.160 mol dm-3 lithium hydroxide, LiOH\text{LiOH}LiOH, solution is added to 35.0 cm3 of 0.210 mol dm-3 dilute hydrobromic acid, HBr\text{HBr}HBr.

Determine which reagent is in excess. Show your working.

[3]
Markscheme

6.2 Quantitative analysis Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Quantitative analysis

119 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.

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