In an energy diagram for an exothermic chemical reaction which of the following is true?
the energy of the transition state is higher than that of the reactants
both (a) and (b) are true
both (a) and (b) are false
Answer:
the first one is true
exothermic means that the reaction gives off heat and the products must be lower energy than the reactants
In order for a reaction to be exothermic the net change in energy (enthalpy) has to be less than zero.
Therefore, the energy of the product must be lower than the reactant. making A true.
The energy of the transition state (local maxima on energy diagram) is higher than the reactant and product. Making B true as well
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