Problem

Globally, more lakes are becoming acidic due to acid rain. Suppose a lake has a pH of 4.2,...

Globally, more lakes are becoming acidic due to acid rain. Suppose a lake has a pH of 4.2, well below the recommended pH of 6.5.

a. What are the [H3O+] and [OH−] of the lake?
b. What are the [H3O+] and [OH−] of a lake that has a pH of 6.5?
c. One way to raise the pH and restore aquatic life of an acidic lake is to add limestone (CaCO3). How many grams of CaCO3 are needed to neutralize 1.0 kL of the acidic water from the lake if the acid is written as HA?

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Solutions For Problems in Chapter 14

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