How many grams of KNO2 must be added to 5.00 liters of 0.67 M HNO2 solution to produce a buffer with pH = 3.15? Assume no change in volume.

How many grams of KNO2 must be added to 5.00 liters of 0.67 M HNO2 solution to produce a buffer with pH = 3.15? Assume no change in volume.

How many grams of KNO2 must be added to 5.00 liters of 0.67 M HNO2 solution to produce a buffer with pH = 3.15? Assume no change in volume.




a. 181 g
b. 3.15 g
c. 270 g
d. 53.6 g
e. 315 g




Answer: A