The Acidity of a Solution Is Determined by the Concentration

question 8

Multiple Choice

The acidity of a solution is determined by the concentration H of hydrogen ions. The formula is . The accompanying exponential formula is H = 0.1^pH. Lower pH values indicate a more acidic solution. Normal rain has a pH of 5.6. Suppose acid rain has a pH of 4.3. How many times as acidic as normal rain is this?

• A)2
• B)5
• C)10
• D)20

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