Question

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing warm water. The table below shows an incomplete record of the investigation.

Investigation Results
Beaker Time Taken for the Tablet to Dissolve
(seconds)
Cold Water (50 ml) 68
Warm Water (50 ml) ?
Which statement best explains the time taken for the tablet to dissolve in warm water?

Hint: Think about how the temperature of the solutions affects the reaction time.

Group of answer choices

Less than 68 seconds as the rate of reaction is higher for warm water

More than 68 seconds as the rate of reaction is lower for warm water

Answer 1

Less than 68 seconds as the rate of reaction is higher for warm water.

Explanation: Higher temperature increases the kinetic energy of the particles, causing more frequent and more energetic collisions and so a faster reaction/dissolving rate.