Question

Which statement best explains the time taken for the tablet to dissolve in tap water?

a) Less than 68 seconds as the rate of reaction is higher for cold water
b) Less than 68 seconds as the rate of reaction is higher for tap water
c) More than 68 seconds as the rate of reaction is lower for cold water
d) More than 68 seconds as the rate of reaction is lower for tap water

Answer 1

The statement (b) Less than 68 seconds as the rate of reaction is higher for tap water, best explains the time taken for the tablet to dissolve in tap water. In general, higher temperatures increase the rate of reaction, leading to faster dissolution. This can be observed when dissolving sugar in hot tea compared to cold tea.

Step-by-step explanation:

The statement (b) Less than 68 seconds as the rate of reaction is higher for tap water, best explains the time taken for the tablet to dissolve in tap water.

When comparing the rates of reaction between cold water and tap water, tap water usually has a higher rate of reaction due to the higher temperature. Higher temperature increases the kinetic energy of the water molecules, leading to more frequent and energetic collisions with the solute particles, resulting in faster dissolution.

For example, if you try to dissolve sugar in hot tea and cold tea, the sugar will dissolve faster in hot tea due to the higher water temperature, which increases the rate of dissolution.