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2.1 Purity and separating mixtures

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Question 5
F

Hydrogen peroxide has the molecular formula H2O2\mathrm{H_{2}O_{2}}H2​O2​.

What is the empirical formula of hydrogen peroxide?

[1]
A

HO\mathrm{HO}HO

B

HO2\mathrm{HO_{2}}HO2​

C

H2O\mathrm{H_{2}O}H2​O

D

H2O2\mathrm{H_{2}O_{2}}H2​O2​

Markscheme

2.1 Purity and separating mixtures Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Purity and separating mixtures

51 exam-style questions on OCR GCSE Chemistry 2.1 Purity and separating mixtures, covering 2.1.1 Pure substances and melting point data, 2.1.2 Relative formula mass and empirical formula, 2.1.3 Formulations as useful mixtures, 2.1.4 Techniques for separating mixtures, and 2.1.5 Chromatography and Rf values. Each one has a worked solution and a mark scheme showing where the marks go.

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