Consider the Ka values for the following acids: Acid ka HA 4.40E-6 HB 7.01E-6 HC 1.24E-5...
Consider the Ka values for the following acids: Acid Ka HA 3.77E-5 HB 4.65E-6 HC 6.60E-6 HD 2.84E-4 HE 1.45E-5 Write the formula for the acid which has the STRONGEST conjugate base. What is the corresponding Kb value for the strongest acid from the table above?
Given the following acids and their corresponding Ka values, predict which acid would have the strongest conjugate base? a. All will be equally strong. b. HC2H3O2 Ka = 1.8 x 10-5 c. HF Ka = 7.2 x 10-4 d. HOCl Ka = 3.5 x 10-8 e. HNO2 Ka = 4.0 x 10-4
Given the following acids and their corresponding Ką values, predict which acid would have the strongest conjugate base? O HOCI Ka = 3.5 x 10-8 O HC2H302 Ka = 1.8 x 10-5 O HF Ka = 7.2 x 10-4 O All will be equally strong. HNO2 Ka = 4.0 x 10-4
Rank the following acids in strength (from weakest to strongest). A HC H302 В НОСІ CHCN DHCI weakest = < (Enter the letter corresponding to each acid.) K, for phenol (a weak acid), CH,OH is 1.00×10-10 K, for acetic acid, CH,COOH is 1.80x10-5 K, for acetylsalicylic acid (aspirin), HC,H,O4, is 3.00*10-4 What is the formula for the strongest conjugate base?
Consider the following unfinished table of weak acids with their corresponding pKa values and Ka values. Weak Acid pka 3.35 ка HNO2 HF HCN - 6.8*10-4 9.31 Arrange these three acids in order of increasing acid strength. (weakest) HCN <HF < HNO2 (strongest) n (weakest) HCN <HNO2 <HF (strongest) (weakest) HF <HNO2 <HCN (strongest) d (weakest) HNO2 <HCN <HF (strongest) Ce (weakest) HNO2 <HF <HCN (strongest)
Consider a solution containing 0.40 M HA and 0.40 MA. If HA has a ka of 4.80E-3, what would the pH of this solution be? Submit Answer Tries 0/98
pH of Weak Acids 19. Consider the following acids; CH5COOH ( benzoic acid) Ka = 6.14x10-5 H3BO3 (boric acid) Ka = 5.83x10-10 H2P04 (dihydrogen phosphate) Ka = 6.30x10-8 HNO3 (nitric acid) >>> 1 Put the acids in order from strongest to weakest. 20. Calculate the pH and percent ionization of the following solutions (Use ICE for weak acid calculation) a. 0.15 M HNO3 0.82; 100% b. 0.15 M HNO2 ( ka = 4.5x10-5) 2.59; 1.71%
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak acid PK, К. If [HA], is... then [H3O+]E ... and pH HCOOH 3.74 1.8 x 10-4 0.100 M 4.2 x 10² M 2.38 HNO2 3.37 4.2 x 10-4 0.100 M 6.3 x 10-M 2.20 HCN 9.20 6.3 x 10-10 0.100 M 7.9 x 10ⓇM 5.10 4.23 0.100 M 5.9 10-M HOCI 7.46 3.5 x 10-8 0.200 M 8.3 x 10M 4.07 0.400 M 1.2...
3. Consider the following weak acids and their K, values, calculate the pK, for each acid. HC,H,O, - Acetic acid K. = 1.8 x 105 PK,= H,PO, - Phosphoric acid K = 7.1 x 10 PK, HCIO - Hypochlorous acid K = 3.5 x 10 pk = You want to prepare buffers at pH 2.8, 4.5 and 7.5. Which weak acid-conjugate base buffer system is the best choice for each pH from the acids listed? Write the reaction and indicate...
Consider a diporitc acid, HA, where Ka1 = 6.37E-4 and Kay = 8.14E-9. Answer the following questions regarding this solution: If the initial concentration of the acid is 0.57M, what is the pH of the solution? Submit Answer Tries 0/98 What will the concentration of A2-be at equilibrium? Submit Answer Tries 0/98