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QUESTION 2 What ae the concentrations of HSO 3" and SO 3 2-in a 5.45 M...
What ae the concentrations of HSO 3 . and SO 3 2- in a 5.45 M aqueous solution of H 250 3? Ka 1 = 1.2 x 10-2 and Ka 2 = 6.6 x 10-8 O [HSO3] = 0.342 M; [S032.1 - 1.2 x 10-2 M [HSO3) = 0.256 M; [SO32-1 - 2.6 x 10-7 M [HSO3) = 0.256 M; [S032-1 = 6.6 x 10-8 M O [HSO3) = 0.182 M; [SO32-) = 0.0032 M O [HSO3) = 2.6 x...
The following mechanism was proposed for the formation of COCl 2 from CO and Cl 2. Step 1 Cl 2 (g) = 2 Cl (g) (fast) Step 2 CO (g) + Cl (g) - COC () (slow) Step 3 COCI(g) + Cl(g) → COCI 2 (E) (fast) Write the rate law expression. O rate = k[CO][C12]1/2 rate = k[Cl2]1/2 rate = k [COCI][CI] rate= k[CO][CI] rate= K[CO](C12] Which of the following changes, at equilibrium, would increase the yield of SiCl...
18. What is the molarity of all the species present in 0.20 M H2TeOz (Ka, = 2 x 10-3 and Kaz = 1 x 10-8)? 19. For a 0.25 M H2SO3 (Ka, = 1.3 x 10-2 and Ka, = 6.3 x 10-8) solution: a) Calculate its pH. b) Calculate the molarity of SO32-. m .
(3 points) A 0.0730 M solution of a monoprotic acid is 1.07% ionized. What is the pH of the solution? Calculate the Ka of the acid. (2 points) The pH of a 0.025 M solution of a monoprotic acid is 3.21. What is the Ka value for the acid? (2 points) Determine the percent ionization of a 0.0028 M HA solution. (Ka of HA = 1.4 x 10-9) (4 points) Lysine is triprotic amino acid (separately loses three H’s in...
*please do not do problem 18! just help eith problem 17! thank
you :)
detailed work very helpful! please write clear and legible
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17. An initially 2.2 M aqueous solution of a weak monoprotic acid has a total ion concentration of 1.24 x 10-M when equilibrium is established. What is the acid-ionization constant, Ka, of the weak acid? (assume initial concentration of the acid is 2 102 x K) a. 1.7 x 10- b. 1.5 x 10 c. 1.2...
What is the pH of a buffer solution containing 0.13 M HF and
5.0×10−2 M NaF?
What is the pH of a buffer solution containing
1.0×10−2 M HF and 0.16 M NaF?
Using the table given below for Ka values, compare the pH of an HF buffer that contains 0.13 MHF and 5.0x10-2 M NaF with another HF buffer that contains 1.0x10-2 MHF and 0.16 M NaF. Ka and K b values for selected weak acids and bases HF Acid...
3. Insoluble metal hydroxides can be used as a "buffer" to resist changes in pH. For example, consider the solution that would sul if 0.200 moles of MgCl2 are combined wih0.200 moles of NaOH in a total volume of 1.00 liter a) Determine the concentrations of all ionic species in this solution b) Calculate the pH of this solution c) You could add 0.040 moles of NaOH to the solution in part (a), causing additional Mg(OH)2 to precipitate. Calculate the...
Question 6 of 12 Submit What is the pH of a 0.0550 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10
2:14 al LTE Question 25 of 32 Submit What is the Ka for a weak monoprotic acid (HA) if a 0.020 M solution of the acid has a pH of 3.23 at 25°C? A) 3.5 x 10-4 B) 5.9 x 10-2 C) 1.7 x 10-5 D) 1.2 x 10-6 2:14 al LTE Question 26 of 32 Submit What is the pH of a solution with an initial concentration of 0.42 M hypochlorous acid, HOCI (Ka = 3.0 x 10-9). A)...
What is the pH of a 6.85 × 10−3 M weak acid solution, HA, if Ka = 4.5 × 10−6? Group of answer choices 1.2 4.8 9.1 3.8 6.5 What is the pOH of 4.50 × 10−4M HBr? Group of answer choices 10.7 6.7 1.7 12.3 3.3 What is the pH of a 9.67 × 10−3M solution of NaOH? Group of answer choices 13.0 4.6 12.0 9.4 2.0 A 6.5 × 10-2 M solution of a weak acid, HA, has...