calculate ph 7. A buffer solution prepared by adding 0.25 mol NaAc and 0.05 mol of HAC to enough v ater to make a total volume of 500 ml. Ka-1.8 x 10-5
2. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0 M HC red by diluting 0.25 mL of a 6.0 M HCl with water to a total 1.25 ml. Record this pH in Part I data sheet, Beaker #1 for Theoretical Final pH. 3. Calculate the pH of a solution prepared by dilutine 0.25 mL of a 6.0 M NaOH with water to a total volume of 20.25 mL. Record this pH in Part I...
1.555 24. For a solution of 0.25 M HC1, determine the (H O'1, (oH-1, and pH. LH3ひっ 35 3ID 25. Determine the [H3o] and pH of a 0.200 M solution of formic acid (HCHOz) with a Ka= 1.8 x 10-4 . 26. A 0.185 M solution of a weak acid (HA) has a pH of 2.95. Calculate the acid ionization constant (Ka) for the acid.
Which of the following is the pH of a 0.25 M CH,COOH solution mixed with 0.10 M CHCOONa when the K. - 1.8 x 10-5 Elimination Tool
What is the pH of a 0.25 M NaOAc solution? For HOAc Ka = 1.8 × 10^-5
8. What is the pH of a 5.00 x 102 M Ba(OH)2(aq) solution at room temperature? a. 1.00 b. 1.30 c. 12.02 d. 12.70 e. 13.00 9. Assuming equal concentrations of conjugate acid and base, which one of the following mixtures is suitable for making a buffer solution with an optimum pH of 4.6-4.8? a. CH3COONa/CH3COOH (K = 1.8 x 105) b. NH/NHACI (K = 5.6 x 10-1) c. NaOCI/HOCI (Ka = 3.2 x 108) d. NaNO2/HNO2 (Ka = 4.5...
a buffer solution of pH =5.30 can be prepared by dissolving acetic acid and sodium acetate in water. How many moles of sodium acetate must be added to 1 L of 0.25 M acetic acid to prepare the buffer? Ka(CH3COOH)=1.8 x 10^-5
What is the pH of a solution prepared by dissolving 5.00 g of Ba(OH)2 in 5.00 liters of water. Assume no volume change after BOH)2 added. (MM of Ba(OH)2 - 171 g/mol). pH = 2.23 pH = 12.43 pH = 11.77 pH = 12.07 pH = 10.60 QUESTIONS A solution is prepared by adding 0.10 mole of sodium fluoride, Naf, to 1.00L of water. Which statement about the solution is true? The concentration of fluoride ions and sodium ions in...
a) What is the pH of a solution that consist of 0.20 M ammonia, NH3, and 0.20 M ammonium choride, NH4Cl? (Kb for ammonia is 1.8 x 10-5) b) 1.25 g of benzoic acid (C6H5CO2H) and 1.25 g of sodium benzoate (NaC6H5CO2) are dissolved in enough water to make 250 mL solution. Calculate the pH of the solution using the Handerson-Hasselbach equation (Ka for benzoic acid is 6.3 x 10-5). c) What is the pH after adding 82 mg of...
26. Calculate the pH of 0.25 M HNO2 (K. = 4.0 x 10). Justify any assumptions made regarding (hint: check assumption with % ionization). Show all work for full credit. (6 pts)