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 CHART ON PINNED SCREENSHOT)

Which statement best explains the time taken for the tablet to dissolve in tap water? (5 points)

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

d more than 68 second as the rate of reaction is lower for tap water.

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