A 100-mL sample of water is placed in a coffee cup calorimeter.When 1.0 g of an ionic solid is added,the temperature decreases from 21.5°C to 20.8°C as the solid dissolves.For the dissolving of the solid A) ($\Delta$H) 0 C) ($\Delta$S)(system) 0 E) none of these

Question

A 100-mL sample of water is placed in a coffee cup calorimeter.When 1.0 g of an ionic solid is added,the temperature decreases from 21.5°C to 20.8°C as the solid dissolves.For the dissolving of the solid A) ($\Delta$H) < 0 B) ($\Delta$S)(universe)> 0 C) ($\Delta$S)(system)< 0 D) ($\Delta$S)(surroundings)> 0 E) none of these

Quizplus · Accepted Answer

The dissolution process is endothermic as the temperature decreases, indicating that the system absorbs heat, increasing the entropy of the universe.

A 100-ML Sample of Water Is Placed in a Coffee Δ\DeltaΔ

A 100-ML Sample of Water Is Placed in a Coffee $\Delta$