Find the pH of an aqueous solution prepared by dissolving 1.00 g of base B (FW...
Find the pH of an aqueous solution prepared by dissolving 1.00 g of base B (FW 74.08 g mol-1) plus 1.00 g of conjugate acid BH+ (pKa = 8.04 & FW 110.54 g mol-1) in 0.100 L
Homework Answers
this is kind of acidic buffer first we have to deduce moles of
base then the conjugate acid, after that apply the simple formula
see image below
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Find the pH of an aqueous solution prepared by dissolving 1.00 g
of base B (FW...
Determine the pH of an aqueous buffer solution (250 mL) comprised of dissolving 5.2812 g of...
Determine the pH of an aqueous buffer solution (250 mL) comprised of dissolving 5.2812 g of Tris (B) (FW = 121.14 g/mol) and 10.2500 g of Tris-HCl (BH+) (FW = 157.60 g/mol) if pKa (BH+) = 8.07? (a) 8.24 (b) 7.90 (c) 8.54 (d) 7.82 (e) 8.01
The pH of a solution prepared by dissolving 0.950 mol of acid in 2.00 L of...
The pH of a solution prepared by dissolving 0.950 mol of acid in 2.00 L of 1.50 M of conjugate base is ? . The Kb for the conjugate base is 6.85 × 10-4. (Assume the final volume is 2.00 L.)
A buffer was prepared by dissolving 0.255 mol of the weak acid HA (K_a = 3.90...
A buffer was prepared by dissolving 0.255 mol of the weak acid HA (K_a = 3.90 times 10-^4) plus 0.075 mol of its conjugate base Na^+A^- in 1.00 L. Find the pH. _____________
a solution is prepared by mixing 2.50 g of acetic acid (CH3CO2H, FW=60g/mol, Ka=1.75x10^(-5) with 4.70...
a solution is prepared by mixing 2.50 g of acetic acid (CH3CO2H, FW=60g/mol, Ka=1.75x10^(-5) with 4.70 g of sodium acetate (CH3CO2Na, FW=82g/mol) and adding water to a 500 mL volume. Note that sodium acetate yields Na+ and CH3COO-, the conjugate base of acetic acid. a.) what is the pH? b.) 15mL of 0.50 M HCl were added to the 500 mL solution, what is the pH after addituon of acid? write answer to 3 sig. figured.
Calculate the pH of a buffer solution prepared by dissolving 19.50 g of sodium cyanate NaCNO...
Calculate the pH of a buffer solution prepared by dissolving 19.50 g of sodium cyanate NaCNO (65.01g/mol) in 1.00 M cyanic acid (HCNO) to a final volume of 1.00 liter of solution. Ka(HCNO) = 3.50 x 10-4
The pH of a 0.5 F solution of a weak base B is equal to 11.30....
The pH of a 0.5 F solution of a weak base B is equal to 11.30. Calculate the pKa of BH+ (BH+ is the conjugate acid of B).
Using the R-ICE table method, Calculate the pH of a solution made by dissolving 5.15 g...
Using the R-ICE table method, Calculate the pH of a solution made by dissolving 5.15 g of hypochlorous acid, HOCl, (MM = 51.46 g/mol) and 15.09 g in sodium hyochlorite, NaOCl (MM = 75.46 g/mol) in 1.00 L of water solution. pKa = 7.52.
1. An aqueous solution of potassium thiosulfate is prepared by dissolving 3.70 g of potassium thiosulfate...
1. An aqueous solution of potassium thiosulfate is prepared by dissolving 3.70 g of potassium thiosulfate in 7.11×102 g of water. The density of the solution is 1.37 g mL-1. a) Determine the mass percent of potassium thiosulfate in the solution. b) Determine the mole fraction of potassium thiosulfate in the solution. 2. An aqueous solution of potassium bromide is prepared by dissolving 8.75 g of potassium bromide in 8.29×102 g of water. The density of the solution is 1.20...
3. HC9H704 (MW = 180. g/mol) is prepared by dissolving 3.60 g into a 1.00 L...
3. HC9H704 (MW = 180. g/mol) is prepared by dissolving 3.60 g into a 1.00 L solution. The pH of this solution was determined to be 2.60. What is the K?
QUESTION 2 Z is a weak base. An aqueous solution of Na2 is prepared by dissolving...
QUESTION 2 Z is a weak base. An aqueous solution of Na2 is prepared by dissolving 0.350 mol of Naz in sufficient water to yield 2.0L of solution. The pH of the solution was 893 at 250°C The Koof is 9.510 1210-5 2110-10 4-10-10
A buffer was prepared by dissolving 0.255 mol of the weak acid HA (K_a = 3.90 times 10-^4) plus 0.075 mol of its conjugate base Na^+A^- in 1.00 L. Find the pH. _____________
3. HC9H704 (MW = 180. g/mol) is prepared by dissolving 3.60 g into a 1.00 L solution. The pH of this solution was determined to be 2.60. What is the K?
QUESTION 2 Z is a weak base. An aqueous solution of Na2 is prepared by dissolving 0.350 mol of Naz in sufficient water to yield 2.0L of solution. The pH of the solution was 893 at 250°C The Koof is 9.510 1210-5 2110-10 4-10-10
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