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Which of the following statements is ( ...

Which of the following statements is `(` are `)` correct ?

A

The heat of neutralization of a strong acid with a strong base is always the same

B

The enthalpy of combustion is alwaysa negative

C

A spontaneous change involves a lowering of free energy

D

The enthalpy of an element in the standard state is assumed to be unity at `298K`

Text Solution

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The correct Answer is:
A, B, C
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