Question
In: Chemistry
What mass (in grams) of sodium benzoate must be added to 150.0 mL of a 0.14...
What mass (in grams) of sodium benzoate must be added to 150.0 mL of a 0.14 M benzoic acid solution in order to obtain a buffer with a pH of 4.25? The molecular weight of sodium benzoate is 144.11g/mol. The Ka of benzoic acid is 6.46x10^-5. Be sure to include proper units in your answer to two significant figures.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
What mass of sodium benzoate should be added to 160.0 mL of a 0.13 M benzoic...
What mass of sodium benzoate should be added to 160.0 mL of a
0.13 M benzoic acid solution in order to obtain a buffer with a
pH of 4.25?
what mass of KCl in grams must be added to 500 ml of a 0.15 M...
what mass of KCl in grams must be added to 500 ml of a 0.15 M
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What mass of sodium nitrite must be added to 350 mL of water to give a...
What mass of sodium nitrite must be added to 350 mL of water to
give a solution with a pH = 8.40? (Ka (HNO2) = 5.6 x 10-4)
What mass of sodium nitrite must be added to enough water to make 350.0 mL of...
What mass of sodium nitrite must be added to enough water to
make 350.0 mL of a solution with pH = 8.40? [Ka(HNO2) = 5.6 ×
10–4]
A 150.0-mL solution contains 2.25 g of sodium benzoate and 2.83 g of benzoic acid. Calculate...
A 150.0-mL solution contains 2.25 g of sodium benzoate and 2.83
g of benzoic acid. Calculate the pH of the solution. For benzoic
acid, Ka=6.5×10−5
Calculate the mass of sodium acetate (NaC2H3O2) that must be added to make 100 mL of...
Calculate the mass of sodium acetate (NaC2H3O2) that must be
added to make 100 mL of an acetic acid/acetate buffer at pH = 5.0,
given that you will use 5.0 mL of 0.50 M acetic acid.
1. Calculate the concentration of acetic acid after 5.0 mL of 0.50
M acetic acid has been diluted to 100.0 mL.
2. Using the Henderson-Hasselbalch equation, calculate the
concentration of NaC2H3O2 need in the buffer.
3. Calculate the mass of NaC2H3O2 needed to make...
What mass in grams of a 10.0% by mass aqueous silver nitrate solution must be added...
What mass in grams of a 10.0% by mass aqueous silver nitrate
solution must be added to 100.0 mL of an aqueous solution that is
0.0250 M in chromium (II) chloride and 0.0200 M in chromium (III)
chloride to precipitate all chloride ion as silver chloride from
solution?
What mass in grams of a 10.0% by mass aqueous silver nitrate solution must be added...
What mass in grams of a 10.0% by mass aqueous silver nitrate
solution must be added to 100.0 mL of an aqueous solution that is
0.0250 M in chromium (II) chloride and 0.0200 M in chromium (III)
chloride to precipitate all chloride ion as silver chloride from
solution?
What is the minimum mass of potassium carbonate that must be added to 100.0 mL of...
What is the minimum mass of potassium carbonate that must be
added to 100.0 mL of a 0.235 M solution of silver(I) nitrate in
order to form a precipitate?
What mass of sodium hydroxide must be added to 75.0 mL of 0.205 M acetic acid in order to create a buffer with a pH of 4.74?
What mass of sodium hydroxide must be added to 75.0 mL of 0.205 M acetic acid in order to create a buffer with a pH of 4.74? Ka for acetic acid is 1.8 x 10–5
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