Question

A reaction occurs when a solid X is placed into a solution Y. As a result, the temperature of the new solution increases by 3°C. The temperature rises another 2°C when more of solid X is added to the solution. What does this indicate about the effect of adding more solid?

A. The reaction is exothermic
B. The reaction is endothermic
C. The solution is saturated
D. The reaction is reversible

Answer 1

Adding more solid in the reaction causes the temperature to increase, indicating an exothermic reaction. The equilibrium shifts towards reactants.

Step-by-step explanation:

When a solid X is placed into a solution Y, and the temperature of the solution increases, it indicates that the reaction is exothermic. In this case, the energy listed as a product is being produced. Additionally, when more solid X is added to the solution and the temperature rises further, it suggests that the equilibrium is shifting back toward reactants to minimize the addition of extra product. Therefore, the effect of adding more solid is that it causes the reaction to be exothermic and the equilibrium to shift towards reactants.