A student is testing the effects of temperature on rate of dissolution. She drops food coloring in three different beakers: one with 100mL of

hot water, one with 100 mL of room temperature water, and one with 100 mL of cold water and predicted that the beaker with the hot

water would spread the fastest. Why do you think she made that prediction?

She made such prediction because When food colouring is added into hot water, the difussion ie spreading rate will be fast . This is due to the high kinetic energy of of the molecules which are randomly bouncing against each other causing the solution to mix faster.

When compared with water at room temperature and cold water, the particles are not moving as fast and the food coloring does not spread or diffuse as fast as the hot water because of the lower kinetic energy of molecules in the warm and cold water although the food coloring in warm water will spread faster than in the cold water.

nikitarahangdaleVT nikitarahangdaleVT · Answer 2 · 2022-04-06T10:17:43+02:00

The beaker with the hot water would spread the drops of food coloring at the fastest because of increase in the kinetic energy of the molecules.

What is rate of reaction?

Rate of any reaction will tells about the speed of the completion of that reaction in the given conditions.

Rate of the reaction will increases on increasing the temperature of the reaction, as temperature increases the kinetic energy of the reactants so that they will move with higher frequency to get collide for the formation of products.

So, dissolution of drops of food coloring is faster in the hot water beaker due to high kinetic energy.

Hence, temperature increases the kinetic energy of the molecules to get collide.

To know more about rate of reaction, visit the below link:

https://brainly.com/question/7578129