As an ionic solid dissolves in water, the temperature of the solution increases. What best describes the enthalpy and entropy of the solution?
A. The enthalpy change is negative, and the entropy decreases.
B. The enthalpy change is negative, and the entropy increases.
C. The enthalpy change is positive, and the entropy decreases.
D. The enthalpy change is positive, and the entropy increases.
Is the answer d?
The correct answer was B. If you are not sure with your answers you shouldn't be helping
cortney chill out
I know its not c because the entropy has to increase
Yes, the correct answer is D. The enthalpy change is positive, and the entropy increases.
To understand why, let's break down the process of dissolving an ionic solid in water. When an ionic solid dissolves, the bonds between the ions in the solid are broken as the ions become surrounded by molecules of water. This process requires energy, so it is endothermic, leading to a positive enthalpy change.
At the same time, the process of dissolving also increases the disorder or randomness of the system, which is the entropy. The ions are dispersed throughout the solution, which leads to an increase in entropy. Therefore, the entropy change is positive.
Overall, the dissolution of an ionic solid in water is accompanied by a positive enthalpy change and an increase in entropy, hence the correct answer is D.