Question

(40 points)

Answer 1

Answer:

The sample will dissolve in more than 1 minute.

Explanation:

In order to answer this question, we have to consider several significant aspects:

• temperature is directly proportional to kinetic energy, that is, the greater the temperature, the greater the kinetic energy. Since kinetic energy measures velocity of the particles, this means that the greater the temperature, the greater the velocity of the individual ions of potassium phosphate;
• we may conclude from the first fact that the number of collisions in a given amount of time will then increase due to an increase in velocity;
• it also follows that the greater the temperature, the faster our salt dissolves due to an increase in the number of successful collisions.

This means that at a lower temperature, the sample will dissolve in a longer period of time.

Answer 2

Answer:

(3.09)  The sample will dissolve in more than 1 minute.

Explanation: