Limestone is made up of calcium carbonate. How would you expect the pH of the lake with limestone bedrock to compare with other lakes with several years of acid rain.

See the answer below.

Explanation:

One would expect the pH of a lake with limestone bedrock to be higher than that of other lakes with several years of acid rain.

A lake with a bedrock made of limestone would be alkaline due to the weathering of the bedrock and the alkaline nature of calcium carbonate. Lakes with several years of acid rain would, of course, be acidic.

Generally, pH above 7 is alkaline while the ones below 7 are acidic. Hence, the pH of a lake with limestone bedrock will be higher (above 7) than the pH of other lakes with years of acid rain (below 7).