Out-of-class Assignment #4
- Page ID
- 70816
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- Calculate the pH of a solution prepared by adding 35 mL of 0.054 M sodium aspartate to 45 mL of 0.028 M aspartic acid hydrochloride.
- Starting with 30 mL of 0.1 M citric acid, calculate the initial pH and the pH at each 5 mL increment of 0.1 M NaOH until you are 10 mL past the last equivalence point. Plot the data and determine whether 99.9% of the citric acid has been neutralized at the last equivalence point. Also calculate the concentration of all species in solution at the second equivalence point.
- Calculate the pH of a 0.345 M solution of sodium glutamate.
- Calculate the pH of a 0.167 M solution of glycylglycine hydrochloride.
- Calculate the pH of a solution prepared by adding 8.76 grams of sodium hydrogen iminodiacetate to a 250 mL volumetric flask and diluting to the mark with water.
- Calculate the pH of a solution prepared by adding 18 mL of 0.111 M sodium EDTA to 26 mL of 0.036 M EDTA (Be careful that you have the right two species based on the naming procedure we have adopted).
- Starting with 30 mL of 0.1 M ethylenediamine, calculate the initial pH and the pH at each 5 mL increment of 0.1 M HCl until you are 10 mL past the last equivalence point. Plot the data and determine whether 99.9% of the ethylenediamine has been neutralized at the last equivalence point. Also calculate the concentration of all species in solution at the second equivalence point.
- Meet with your group to go over your answers to problems 1-7.