Question

during a particular chemical reaction it takes 100Kj of energy to break all the bonds and 150 Kj of energy is released when the new bonds form. Which is true about the overall reaction?

1. it is endothermic and absorbs energy

2. it is exothermic and releases 50 Kj

3. It is exothermic and releases 150 Kj

4. it is endothermic and releases energy

Answer 1

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