sam investigates how the ph of a substance ch...
sam investigates how the ph of a substance changes when the substance is diluted by adding water. sam recorded the following observation: the ph of acidic substances decreases upon dilution. explain what is incorrect about sams observation. answer in 2 to 3 complete sentences.
Answer
# Brief Explanations:
The pH of acidic substances increases upon dilution. This is because dilution decreases the concentration of hydrogen - ions ($H^+$). As pH = -log[H⁺], a lower $H^+$ concentration leads to a higher pH value.
# Answer:
Sam's observation is incorrect because the pH of acidic substances increases, not decreases, upon dilution as the concentration of hydrogen - ions decreases with dilution.