Why Might an Area with a Large Amount of Limestone

question 174

Multiple Choice

Why might an area with a large amount of limestone (CaCO₃) be less susceptible to acid rain?

• A)The acid in the rain is neutralized by the natural base in the limestone.
• B)The rain travels quickly through the porous limestone and therefore the rate of reaction is slower.
• C)Limestone is degraded by acid rain and therefore acid rain has the same damaging effects.
• D)Only acid rain made from sulfur compounds reacts with the limestone.
• E)none of the above

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Definitions:

Alkaline

Having a pH greater than 7, indicating a base where concentration of hydroxide ions is greater than that of hydrogen ions.

Blood

A body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away.

pH

A scale measuring the acidity or alkalinity of a solution, where 7 is neutral, values below 7 are acidic, and values above 7 are alkaline.

Buffers

Substances that minimize changes in the pH of a solution by absorbing or releasing hydrogen ions.