GCSE / O Levels Chemistry

The diagram shows the energy profile for a reaction.
route 1
reactants
energy
route 2
products
progress of reaction
Which statements about this reaction are correct?
More energy is needed to break the bonds than is released when new bonds are
formed.
1
2
Route 1 and route 2 give the same overall equation for the reaction.
3
Route 2 involves the use of a catalyst.
4
The reaction is exothermic.
A 1, 2 and 3
B 1 and 2 only
с 2,3 and 4
D
3 and 4 only


Exothermic and Endothermic | 2018 - M/J - 5070/11 | Q16