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Q.

Which statement is always true for an exothermic reaction?

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a

The enthalpy change is negative.

b

The reaction absorbs heat from the surroundings.

c

The reaction is spontaneous.

d

The entropy change is negative.

answer is A.

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Detailed Solution

The converse is true for exothermic reactions: heat is produced, the enthalpy of reaction is negative, and the products contain less energy than the reactants.

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