An unknown substance is added to a solution and the pH of the solution decreases. The substance is best described as a(n) __________Group of answer choicesacid base salt. neutral solutionsolvent
Question
An unknown substance is added to a solution and the pH of the solution decreases. The substance is best described as a(n) __________Group of answer choicesacid base salt. neutral solutionsolvent
Solution
The substance is best described as an acid. When an unknown substance is added to a solution and the pH decreases, it means the solution has become more acidic. Acids are substances that increase the concentration of hydrogen ions (H+) when dissolved in water, which leads to a decrease in pH.
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