Limestone and marble are often used in buildings. Both types of rock contain calcium carbonate, which is sensitive to chemical weathering by acids. A scientist conducted an experiment to test the effect of acid strength on calcium carbonate... Which change would reduce the possibility of error in the experiment?

Using a different acid would introduce a new variable that could affect the results, making it difficult to assess the specific impact of acid strength on calcium carbonate. This change could lead to confounding results, as the new acid may have different properties and reactions compared to the original acid, thereby increasing the potential for error.

While increasing the amount of acidic solution might affect the rate of reaction, it does not inherently address the issue of variability in results. Simply using more acid does not provide a means to replicate the experiment or reduce measurement errors; rather, it could skew results if the reaction becomes overly vigorous or uncontrollable.

Employing a solution with a pH below 3.00 could potentially enhance the reaction rate, but it does not mitigate the risk of experimental error. Lowering the pH might introduce additional complications, such as increased reaction variability or unintended side reactions, which could obscure the relationship being tested between acid strength and calcium carbonate.