Solution Found!
Lakes that have been acidified by acid rain (see Chemistry in the Environment box in
Chapter 14, Problem 116P(choose chapter or problem)
Problem 116P
Lakes that have been acidified by acid rain (see Chemistry in the Environment box in Section 5.9) can be neutralized by liming, the addition of limestone (CaCO3). How much limestone in kilograms is required to completely neutralize a 3.8 × 109 L lake with a pH of 5.5?
Questions & Answers
QUESTION:
Problem 116P
Lakes that have been acidified by acid rain (see Chemistry in the Environment box in Section 5.9) can be neutralized by liming, the addition of limestone (CaCO3). How much limestone in kilograms is required to completely neutralize a 3.8 × 109 L lake with a pH of 5.5?
ANSWER:
Solution 116 P:
Here, we are going to calculate the amount of limestone required to completely neutralize a 3.8 × 109 L lake with a pH of 5.5.
Step 1:
pH = 5.5
Concentration of H+ is
pH =-log[H+]
[H+] = 10-pH = 10 -5.5 = 3.16 x 10-6 mol/L