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3.2 Energetics

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Question 20
H

The diagram shows the reaction profile for a reaction.

image

The energy taken in to break the bonds in the reactants is 1250 kJ/mol.

How much energy is released when the bonds in the products are made?

[1]
A

1050 kJ/mol1050\,\mathrm{kJ/mol}1050kJ/mol

B

1110 kJ/mol1110\,\mathrm{kJ/mol}1110kJ/mol

C

1170 kJ/mol1170\,\mathrm{kJ/mol}1170kJ/mol

D

1330 kJ/mol1330\,\mathrm{kJ/mol}1330kJ/mol

Markscheme

3.2 Energetics Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Energetics

51 exam-style questions on OCR GCSE Chemistry 3.2 Energetics, covering 3.2.1 Exothermic and endothermic reactions and reaction profiles and 3.2.2 Calculating energy change from bond energies. Each one has a worked solution and a mark scheme showing where the marks go.

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