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Question

Which of the following is not correct?



A
Dissolution of NH4Cl in excess of water is an endothermic process
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B
Neutralisation process is always exothermic
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C
The absolute value of enthalpy (H) can be determined experimentally
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D
The heat of reaction at constant volume is denoted by ΔE
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Solution

The correct option is D The absolute value of enthalpy (H) can be determined experimentally
Enthalpy (H) is relative with respect to hydrogen. Its absolute value cannot be determined experimentally

Chemistry

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