Statement I: When a salt is dissolved in water, the temperature of solution decreases.<br><br>Statem — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

When some salts (like $KOH$, $CaCl_2$, $NaOH$) dissolve in water, the process is highly exothermic, causing the temperature of the solution to increase. For other salts (like $KNO_3$, $NH_4Cl$), the process is endothermic, causing the temperature to decrease. Thus, Statement I is incorrect. Statement II is correct.