How many grams of dipotassium phthalate (242.3 g/mol) must be added to 550 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 5.60? The Ka's for phthalic acid are 1.12 x 10-3 and 3.90 x 10-6.
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 550 mL of 0.175...
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 100 mL of 0.125 M potassium hydrogen phthalate to give a buffer of pH 5.80? The Ka's for phthalic acid are 1.12 x 10-3 and 3.90 x 10-6.
How many grams of dipotassium succinate trihydrate (K2C4H4O4·3H2O, MW = 248.32 g/mol) must be added to 650.0 mL of a 0.0420 M succinic acid solution to produce a pH of 5.867? Succinic acid has pKa values of 4.207 (pKa1) and 5.636 (pKa2).
How many grams of KCN (Mm = 65.1 g/mol) must be added to 900. mL of 1.240-M solution of HCN in order to prepare a pH = 8.86 buffer?
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.976-M solution of NH3 in order to prepare a pH = 9.15 buffer? What volume (to the nearest 0.1 mL) of 4.00-M NaOH must be added to 0.600 L of 0.300-M HNO2 to prepare a pH = 3.50 buffer?
How many mL of 3.50 M potassium hydroxide must be added to 500 mL of a 0.200 M carbonic acid solution to make a buffer with pH = 6.30? (Assume only the first hydrogen is dissociated.)
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 750. mL of 1.188-M solution of NH3 in order to prepare a pH = 9.90 buffer?
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 750. mL of 0.928-M solution of NH3 in order to prepare a pH = 8.95 buffer?
How many grams of KOH must be added to 500 mL of a 0.100 M solution of Phosphoric acid to produce a buffer pH 12.50? pKa for phosphoric acid = 12.66
b. 2.1099 g potassium hydrogen phthalate is added to 20.00 mL of water and titrated with 0.6801 M KOH. How many milliliters of base are needed to reach the equivalence point? licu
How many grams of solid potassium nitrite should be added to 1.50 L of a 0.149 M nitrous acid solution to prepare a buffer with a pH of 4.139 ? grams potassium nitrite = g. How many grams of solid ammonium chloride should be added to 1.50 L of a 0.115 M ammonia solution to prepare a buffer with a pH of 10.250 ? grams ammonium chloride =