Frog-61 Project 001_017 (Private/Restricted Access)
pH Calculation Practice
Find the pH of the following solutions:
1) A 0.001 M solution of HCl (hydrochloric acid).
2) A 0.09 M solution of HBr (hydrobromic acid).
3) A 1.34 x 10-4 M solution of hydrochloric acid.
4) A 2.234 x 10-6 M solution of HI (hydroiodic acid).
5) 735 L of a solution containing 0.34 moles of nitric acid.
6) What is the pH of a solution made by adding water to 15 grams of hydroiodic acid until the volume of the solution is 2500 mL?
7) A swimming pool has a volume of one million liters. How many grams of HCl would need to be added to that swimming pool to bring the pH down from 7 to 4? (Assume the volume of the HCl is negligible)
pH Calculations – Answer Key
1) A 0.001 M solution of HCl (hydrochloric acid). 3.00
2) A 0.09 M solution of HBr (hydrobromic acid). 1.05
3) A 1.34 x 10-4 M solution of hydrochloric acid. 3.87
4) A 2.234 x 10-6 M solution of HI (hydroiodic acid). 5.65
5) A solution containing 0.34 moles of nitric acid in 735 L of water. 3.33
6) What is the pH of a solution made by adding water to 15 grams of hydroiodic acid until the volume of the solution is 2500 mL?
pH: 1.6
7) A swimming pool has a volume of one million liters. How many grams of HCl would need to be added to that swimming pool to bring the pH down from 7 to 4? (Assume the volume of the HCl is negligible)
3545 grams (100. moles)
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