How many grams of glyoxylic acid and sodium glyoxylate are needed to prepare 2.50 L of a 2.10 M buffer at pH 3.45?
a) 105 g of glyoxylic acid and 56 g of sodium glyoxylate
b) 75 g of glyoxylic acid and 40 g of sodium glyoxylate
c) 95 g of glyoxylic acid and 60 g of sodium glyoxylate
d) 120 g of glyoxylic acid and 70 g of sodium glyoxylate