In an experiment, a scientist compares the effect of adding acid rain to samples taken from two different lakes, the scientist observes that ten drops of acid rain added to water taken from lake minnetonka in southern minnesota does not change the ph from 7.5, but ten drops of acid rain added to water take from upper kintla lake in glacier national park causes the ph to change from 7.5 to 5.2. which conclusion is supported by these observations

The conclusion is that lake Minnetonka acts like a buffer solution, but the  water take from Upper Kintla Lake does not.

Explanation:

A buffer solution is an aqueous solution that contains a mixture of a weak acid and its conjugate base, or a weak base and its conjugate acid. When a small amount of strong acid (like acid rain) or base is added to a buffer solution its pH remains almost the same, like in the water of lake Minnetonka.

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