How many moles of sodium hydroxide would have to be added to 250
mL of a...
How many moles of sodium hydroxide would have to be added to 250
mL of a 0.436 M acetic acid solution, in order to prepare a buffer
with a pH of 4.630?
How many moles of sodium hydroxide would have to be added to 250
mL of a 0.357 M hypochlorous acid solution, in order to prepare a
buffer with a pH of 7.640?
Calculate how many mL of 0.100 HCl should be added to how many
grams of sodium acetate dihydrate (NaOAc * 2H2O, FM 118.06) to
prepare 250.0 mL of 0.100 M buffer, pH 5.00.
How many moles of NH4Cl must be added to 100 mL of
0.1 M NH4OH solution to prevent precipitation
of Mn(OH)2 when this solution is added to 100 mL of a
0.002 M solution of MnCl2? Assume no change
involume on addition of NH4Cl.
A.1- how many moles of sodium chloride would be needed to
prepare a 0.058 M of NaCl solution in a 100-mL Volumetric
Flask.
2- how many grams of sodium chloride would need to be weighed
out to make the 0.058 M NaCl Solution in 100-mL Volumetric
Flask.
3- In 1.000 liters of 0.058 M NaCl solution, how many moles of
NaCl are present?
4- In 1.000 liters of a 0.058 M NaCl solution, how many grams of
NaCl are present?...
50.0 mL of 10.0 M sodium hydroxide is added to a 1.00 L solution
containing 0.100 M nickel (II) nitrate, 0.100 M tin (II) nitrate,
and 0.100 M zinc nitrate. How many grams of tin (II) hydroxide
precipitates from solution.
3a) How many mL of a 1.21 M NaOH solution would contain 0.275
moles of NaOH? ___ mL NaOH solution
3b) How many mL of 12M HCl solution is needed to prepare 775mL
of 0.880M HCl by dilution? ___ mL is needed.
3c) Calculate the molarity of a solution made by dissolving
35.2g K2CO3 in enough water to form 275mL of solution. The solution
is ____ M.
3d) 10.5mL of 12M HCl solution is diluted to a volume of 122mL....
How many mol of HCl would have to be added to 0.874 L of a 2.485
M B: in order to obtain a buffer with a pH of 8.90? (The Kb for B:
is 5.82*10^-3 3 ). Assume there is no volume change.