Activation energy is (blank)
a. the heat released in a reaction
b. the energy barrier between reactants and products
c. the energy given off when reactants collide
d. generally very high for a reaction that takes place rapidly

B. The energy barrier between reactants and products

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Entropy and Free Energy Quiz

1) B

2) C

3) A

4) C

5) D

6) C

7) B

8) C

9) B

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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