a reaction occurs when solid x is placed into solution y. as a result, the temperature of the new solution…

a reaction occurs when solid x is placed into 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?\n○ it increased the number of molecular collisions.\n○ it decreased the number of molecular collisions.\n○ it decreased the space between the molecules and lowered the reaction rate.\n○ it increased the space between the molecules and increased the reaction rate.

a reaction occurs when solid x is placed into 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?\n○ it increased the number of molecular collisions.\n○ it decreased the number of molecular collisions.\n○ it decreased the space between the molecules and lowered the reaction rate.\n○ it increased the space between the molecules and increased the reaction rate.

Answer

Answer:

It increased the number of molecular collisions.

Brief Explanations:

When more solid reactant X is added, the concentration of the reactant in the solution effectively increases, leading to more frequent molecular collisions between X and the components of solution Y. This increased collision frequency drives more of the exothermic reaction (evidenced by the temperature rise), which matches the observed temperature increase. The other options are incorrect: decreasing collisions would slow the reaction and not raise temperature; changing molecular spacing is not the direct cause here, and a lower reaction rate would not produce more heat.