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AIPMT PRELIMS2005Physics-Thermodynamics

AIPMT PRELIMS 2005 Physics Enthalpy Change MCQ Question

Type: MCQ-conceptual-Medium-Class 11

MgO(s) + 2HCl(aq) → MgCl₂(aq) + H₂O(l) will be:

A

less than - 57.33 kJ mol⁻¹

B

57.33 kJ mol⁻¹

C

$greater than^{-57}.33 kJ mol⁻¹$

D

57.33 kJ mol⁻¹

Correct Answer

Option A

Detailed Explanation

The reaction is exothermic, and the enthalpy change is given a $s^{-57}$ .33 kJ mol⁻¹, indicating that energy is released.

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