Q. Enthalpy of solution of $NaOH$ (solid) in water is $- 41.6\ kJ\ mol^{- 1}$, when $NaOH$ is dissolved in water, the temperature of water
A) Increases
B) Decreases
C) Does not change
D) Fluctuates indefinitely
Explanation
(a)
Since, process is exothermic, heat is evolved, due to this temperature of water increases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.