# Solution: How much sodium lactate NaC3H3O3, should be added to 583.58 ...

###### Question

How much sodium lactate NaC3H3O3, should be added to 583.58 mL of a 0.473 M lactic acid, HC3H3O3, solution to make a buffer of pH 4.08? (assume any change in volume is insignificant and that  the pKa is rounded to two significant figures)

a. 6.986 grams

b. 1.157 grams

c. 127.4 grams

d. 17.89 grams

e. 51.59 grams