NEET Chemistry Enthalpy MCQ Question
Which of the following statements about enthalpy is correct?
Enthalpy of dilution is positive when a solvent is added to a concentrated solution.
The enthalpy of atomization for diatomic molecules is defined as the enthalpy change when one mole of bonds is broken to form gaseous atoms.
Ionization energy and electron affinity are independent of temperature when calculating enthalpy changes.
The enthalpy change for the freezing of water is always negative regardless of temperature.
Correct Answer
Detailed Explanation
The enthalpy of atomization is indeed the enthalpy change on breaking one mole of bonds to obtain atoms in the gas phase, as stated in the NCERT context. Statement B accurately reflects this definition, while the others contain inaccuracies.
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