QUESTION 7 HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving...
Z- is a weak base. An aqueous solution of NaZ is prepared by dissolving 0.550 mol of NaZ in sufficient water to yield 1.0 L of solution. The pOH of the solution was 4.07 at 25.0 °C. The Kb of Z- is OA 1.3 x 10-11 OB.6.9 x 10-9 OC 2.1 x 10-10 OD.1.3 10-8 OE 2.8 x 10-12
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
Calculate the pH of a solution prepared by dissolving 0.050 mol of benzoic acid (HA) and 0.50 mol of sodium benzoate (A-) in water sufficient to yield 1.00 L of solution. The Ka of benzoic acid is 6.30 x 10-5 A. 5.20 B. 1.30 C. 7.00 D. 3.20 E. 4.20
an aqueous solution of NaZ is prepared by dissolving 0.350 mol of NaZ in enough water to yield 1.0 L solution. The pH of the solution is 8.93 calculate kb of z- Start with equation z-+H2O yields HZ=OH- 2.1x 10^-10
QUESTION 14 Calculate the pH of a solution prepared by dissolving 0.270 mol of formic acid (HCO2H) and 0.230 mol of sodium formate (NaCO2H) in water sufficient to yield 1.00 L of solution. The Ka of formic acid is 1.77X104 Enter your answer with three decimal places.
Please answer all the questions #1. HA is a weak acid. an aqueous solution of HA was prepared by dissolving 0.185 mol of HA and diluted to 525mL. The pH of solution was 3.93 at 25.0°C. The Ka of HA is _____. #2. What is the pH of a solution at 25°C with[H^+] = 2.50 • 10^-5?
Calculate the pH of a solution prepared by dissolving 0.370 mol of formic acid HCOOH and 0.230 mol of sodium formate HCOONa in water sufficient to yield 1.00 L of solution. The Ka of formic acid is 1.77x10. -4 Seleccione una: a. 10.463 b. 2.307 O O c. 2.099 d. 3.546 e. 3.952
A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium formate in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly. The pH does not increase drastically because the NaOH reacts with the present in the buffer solution. The K, of formic acid is 1.8 x 10+ A formic acid B. sodium formate C water D. sodium E....
Calculate the pH of a solution prepared by dissolving 0.876 moles of carbonic acid (H2CO3) and 0.543 moles of sodium hydrogen carbonate (NaHCO3) in water sufficient to yield 1.00 L of solution. The Ka of carbonic acid is 4.5x10^-7. Explain answer please
a solution is prepared by
combining the following: 200mL .1 M H2SO4 100mL .2 M NaOH 700mL
.143 M K2SO4 The pH of the solution = 3.6 What is the Ka of
HSO4?
rißPIPd An aqueous solution of NaF is prepared by dissolving 0.350 mol of NaF in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 °C. The Kb of F- is Styles Eupp You are asked to prepare 100 ml...