Question

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?
It increased the number of molecular collisions.
It decreased the number of molecular collisions.
It decreased the space between the molecules and lowered the reaction rate.
It increased the space between the molecules and increased the reaction rate.

Answer 1

It increased the number of molecular collisions.

Step-by-step explanation:

more solution means that there are more molecular collisions because more of the solution is present

Answer 2

Answer: It increased the number of molecular collisions.

Step-by-step explanation:

You added more molecules to the mixture. They speed up as the heat up making them collide more often. This making the whole mixture heat up. Hope that helped.