Question

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap 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 Tap Water (50 ml) ?

Answer 1

the answer is B I beleive, because the cold water slows down the process of reaction

Answer 2

The answer would be B. Less than 68 seconds as rate of reaction is higher for tap water because when you add a solute to cold water, it does not dissolve in the solvent as to putting the solute in room temperature or warm water.