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...
NH, is a weak base (Kb = 1.8 x 10-M), so the salt NH, Cl acts as a weak acid. What is the pH of a solution that is 0.033 M in NH CI? pH = pH = {
NH, is a weak base (Ks = 1.8 x 10-M), so the salt NH Cl acts as a weak acid. What is the pH of a solution that is 0.00M in NH CI? pH
Calculate the pH of a 0.145 M (₂ Hs NH₃ Cl solution.
5a) 5a) Calculate the pH when 30.00 mL of 1.300 x 10'M NH. NH3(aq) is titrated is titrated with 30.00 mL of 1.000 x 10-'M HCI. (3 points) 5b) What is the best buffer pH for this titration? (1 point)
7) For the chemical reaction NH(aq) + HCl(aq) → NH"(aq) + Cl(aq) the acid and conjugate base are a)NH(acid): NH" (conjugate base) b) NH, (acid), CT (conjugate base) c) HCl(acid); NH (conjugate base) d) HCl(acid), NH, (conjugate base) c) HCI (acid) Conjugate base) 8) A buffer solution is formed by adding 0.0100 moles of potassium dihydrogen phosphate (KH-PO.) and 0.0100 moles of potassium hydrogen phosphate (K_HPO) into 1.000 liters of water. When 0.0010 moles of NaOH is added to this...
3. What pH would be obtained by adding 5 mL of 0.100 M NaOH to 20 mL of a 0.100 M NH3/NH Cl buffer LE with a pH of 9.26? Leg Ty 9.99
What is the pH of a 8.6 x 10-8 M solution of HCl(aq) at 25 °C? Report your answer to the hundredths place. pH = Assuming complete dissociation, what is the pH of a 3.98 mg/L Ba(OH), solution? pH = X10 Assuming equal concentrations, arrange these solutions by pH. Highest pH Lowest pH Answer Bank HCIO, (aq) Cabr,(aq) NaCN(aq) CH, NH, Br(aq) RbOH(aq)
Problem 4 (8 points). What is the pH of a 0.890 M NH (aq) solution at room temperature? The base ionization constant of ammonia is Ko = 1.78 10. Round off your answer to 2 decimal places and enter your answer in the box provided with correct units and sig. figs.: The pH of Answer: . He 0.890 M ammonia is): pH =
Addition of NH?Cl to a 0.50 M NH? solution results in a/an ______ in [H?O?] and a/an _____ in % ionization. Addition of NH4CI to a 0.50 M NH3 solution results in a/an in [HsO] and aan--in % ionization. increase; decrease no change; no change increase; increase decrease,decrease decrease: increase