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6.2 Quantitative analysis

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Question 83
H

Route A has 95% yield and 40% atom economy. Route B has 80% yield and 90% atom economy. Why is neither figure alone enough?

[1]
A

Yield shows how much waste the equation makes; atom economy shows how much product is obtained

B

Yield shows how fast the product forms; atom economy shows how much energy is needed

C

Yield shows how much product is obtained; atom economy shows how much waste the equation makes

D

Yield shows how pure the product is; atom economy shows how fast the product forms

Markscheme

6.2 Quantitative analysis Questions

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

151 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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