pH Review Problems

1)        What is the molarity of a solution that has 450 grams of sodium chloride in 800 mL of water?  

2)        What is the molarity of a solution that contains 100 grams of iron (II) nitrate in 2.4 liters of water?

3)        What is the pH of a solution that contains 2.4 x 10-5 moles of hydrobromic acid in 0.5 L of water?

4)        What is the pH of a solution that contains 25 moles of nitric acid dissolved in 5000 liters of water?

5)        What is the pH of a solution that contains 0.009 grams of hydrochloric acid in 100 mL of water?

6)        What is an acid/base indicator used for?

7)        Define “titration”:

8)        In a few steps, describe how you would titrate a base of unknown concentration with an acid with concentration 1 M.

9)        I did a titration where it took 50 mL of 0.1 M hydrochloric acid to neutralize 500 mL of a base with unknown concentration.  Using this titration information, what was the concentration of the base?

10)        I did a titration where it took 25 mL of 5 M NaOH to neutralize 1000 mL of an acid with unknown concentration.  Using this information, what was the concentration of the acid?