How many grams of sodium nitrite, NaNO2 is required to make 1.00 L of a buffer...
How many grams of sodium nitrite, NaNO2 is required to make 1.00 L of a buffer that has a pH of 2.6? A total concentration of the acid and the salt of the conjugate base of 0.35 M is required to achieve the correct buffer capacity. Report your answers to 3 significant digits, but do NOT include units.
answer is 3.74
If a buffer has a buffer capacity of 0.4 M and the concentration of the acid is 0.11 M, what is the concentration of the conjugate base? Report your answer in moles per liter to 2 sig figs, but do NOT include units.
answer is 0.29
I have no clue how to solve either, if you can only solve one of them please help me with the first one :)
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How many grams of sodium nitrite, NaNO2 is required
to make 1.00 L of a buffer...
A buffer is made having a weak acid concentration of 0.50 M and a conjugate base...
A buffer is made having a weak acid concentration of 0.50 M and a conjugate base concentration of 0.67 M. If the weak acid has a Ka of 4.5 x 10-6, what is the pH of the buffer? Answer with 3 sig figs.
How many grams of solid sodium nitrite should be added to 0.500 L of a 0.114...
How many grams of solid sodium nitrite should be added to 0.500 L of a 0.114 M nitrous acid solution to prepare a buffer with a pH of 3.971 ? grams sodium nitrite = ------------ How many grams of solid ammonium chloride should be added to 0.500 L of a 0.134 M ammonia solution to prepare a buffer with a pH of 8.470 ? grams ammonium chloride = ------------ How many grams of solid sodium fluoride should be added to...
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for...
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for formic acid is 1.8 x 10- a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH = 4.18 Correct pK, = - log(1.8 x 10^4) = 3.74 We use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution. (HCO3 pH=pk.vlog HCO, = 3.74 +log 0.055 020...
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271...
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271 M nitrous acid solution to prepare a buffer with a pH of 2.614? grams sodium nitrite =
How many grams of solid sodium nitrite should be added to 2.00 L of 0.101 M...
How many grams of solid sodium nitrite should be added to 2.00 L of 0.101 M nitrous acid solution to prepare a buffer with a pH of 2.460? (K, for nitrous acid = 4.50x104) g sodium nitrite
How many grams of solid sodium nitrite should be added to 2.00 L of 0.210 M...
How many grams of solid sodium nitrite should be added to 2.00 L of 0.210 M nitrous acid solution to prepare a buffer with a pH of 2.810? (Ka for nitrous acid = 4.50×10-4) g sodium nitrite
DATA AND CALCULATION Preparation and Base Buffer Capacity of Buffer A Mass of sodium acetate used...
DATA AND CALCULATION Preparation and Base Buffer Capacity of Buffer A Mass of sodium acetate used 0.3730g Actual pH of the buffer 5.27 Volume of the buffer used in buffer capacity titration 20.0 mL Volume (mL) of standardized NaOH used to change the pH by 1 unit 17.5 mL Concentration of standardized NaOH 0.100M Moles of NaOH needed to change the pH by 1 unit for the buffer 0.00095 mol The buffer capacity as moles of base per Liter buffer...
For each of the weak acids listed below, consider how you would make a buffer solution...
For each of the weak acids listed below, consider how you would make a buffer solution where the weak acid has a concentration of 0.5 M at equilibrium. Determine what molarity for each potassium conjugate base salt would need to be added to make 500 mL of an effective buffer with a pH of 5.32. Which acid would make the best buffer at this pH? Which conjugate base salt would be the most economical (cheapest) out of the three choices? ...
A student was required to prepare 250.0 mL of a hypochlorous acid/sodium hypochlorite buffer in which...
A student was required to prepare 250.0 mL of a hypochlorous acid/sodium hypochlorite buffer in which the concentration of the weak acid component was 0.084 M and the concentration of the conjugate base was 0.02 M. The student was supplied with 0.441 M hypochlorous acid and 1.0M NaOH to perform this task. What volume (in mL) of the acid would the student need to prepare this buffer solution? Hint: assume that all of the conjugate base comes directly from the...
How many grams of solid potassium nitrite should be added to 0.500 L of a 0.174...
How many grams of solid potassium nitrite should be added to 0.500 L of a 0.174 M nitrous acid solution to prepare a buffer with a pH of 4.2527 grams potassium nitrite = Submit Answer Try Another Version 10 tem attempts remaining
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for formic acid is 1.8 x 10- a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH = 4.18 Correct pK, = - log(1.8 x 10^4) = 3.74 We use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution. (HCO3 pH=pk.vlog HCO, = 3.74 +log 0.055 020...
How many grams of solid sodium nitrite should be added to 2.00 L of a 0.271 M nitrous acid solution to prepare a buffer with a pH of 2.614? grams sodium nitrite =
How many grams of solid sodium nitrite should be added to 2.00 L of 0.101 M nitrous acid solution to prepare a buffer with a pH of 2.460? (K, for nitrous acid = 4.50x104) g sodium nitrite
How many grams of solid potassium nitrite should be added to 0.500 L of a 0.174 M nitrous acid solution to prepare a buffer with a pH of 4.2527 grams potassium nitrite = Submit Answer Try Another Version 10 tem attempts remaining
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