Calculate the pH and percent dissociation of 0,25 M NH3, Ks- 1.8*10 8. Write the first...
Calculate the pH and percent dissociation of 0.25 M NH3, Kb = 1.8 × 10^–5
38. A buffer solution is 0.40 M NH3 and 0.60 M NHACI. Kb for NH3 is 1.8 x 10-5 a) Calculate the pH for the buffer system. b) Calculate the pH of the solution after adding 0.00600 moles of NaOH to 400.0 mL of the buffer. c) Calculate the pH of the solution after adding 0.050 moles of HCl to 600.0 mL of the buffer.
pelase help 5. (8 points) Calculate the pH of each of the following aqueous solutions at 25 C 0.65 M boric acid (B(OH), K,-7.3 x 10") a. 3.15 M ammonia (NH, K.- 1.76 x 10) b. c. 0.82 M benzoic acid (CaH,COOH, K.-6.3 x 10) 0.100 M HASO4 (K,-2.5 x 10, Ke 5.6 x 10, K-3.0 x 10) d. (2 points) Determine whether each of the following salts are acidic, basic, or neutral. 6. a. Na SO b. CH NH...
Kb for NH3 is 1.8 x 10-). What is the pH of a 0.35 M aqueous solution of NH3? O a. 9.71 b. 4.86 c. 9.14 d. 2.60 e. 11.40
What is the pH of a 0.10 M NH4Cl solution? (Kb(NH3) = 1.8 x 10-5 A. 7.25 B. 11.3 C. 5.63 D. 3.40 E. 10.6
What is the pH of a 0.01 M NH4Cl solution? (Kb(NH3) = 1.8 x 10-5 A. 7.25 B. 11.3 C. 5.63 D. 3.40 E. 10.6
How many grams of dry NH4ClNH4Cl need to be added to 2.50 LL of a 0.800 MM solution of ammonia, NH3NH3, to prepare a buffer solution that has a pHpH of 8.86? KbKbK_b for ammonia is 1.8×10−51.8×10−5.
Calculate Ka for 1 M NaCH3COO pH = 9.37 H+ = 4.203 X 10^-10 OH- = 2.402 X 10^-5 CH3COO- = 1.00 X 10^0 CH3COOH = 2.402 X 10^-5 ________________ Calculate Ka using the formula Kw = Ka X Kb and the appropriate equilibrium constant for 1 M NaCH3COO. NaCH3COO ---> Na+ (neutral) + CH3COO-. Is the conjugate base for CH3COOH. CH3COOH Ka1 = 1.8 X 10^-5 ______________________ Calculate Ka for 1 M NH4Cl pH = 4.26 H+ = 2.336...
Calculate the equilibrium concentrations of all chemical species present in a 0.10 M H CO.(aq) solution. What is the percent ionization of the acid and resulting pH? Units Units [H2CO3) = Number [HCO3) = Number [CO32) = Number [H30+) = Number Units Units % ionization = Number pH = Number Ka Acid Acetic Ammonium Formula CH3COOH NH4+ H3B03 1.8 x 10-5 5.6 x 10-10 5.4 x 10-10 Boric Carbonic H2CO3 Chlorous Formic Hydrocyanic Perchloric HCIO2 HCOOH HCN HC104 4.5 x...
Titrations Part A A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 19.0 mL of HNO3. Express your answer numerically. Part B A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of NaOH. Express your answer numerically.