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1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1...
17. Which of these acids is the strongest? A) H2SO3 B) H2SO3 C) H2TeO3 18. Which...
17. Which of these acids is the strongest? A) H2SO3 B) H2SO3 C) H2TeO3 18. Which one of these net ionic equations represents the reaction of a strong acid with a weak base? A) H(aq) + OH(aq) + H2O(aq) B) H(aq) + CH3NH2(aq) → CH3NH3(aq) C) OH(aq) + HCN(aq) → H2O(aq) + CN-(aq) D) HCN(aq) + CH3NH2(aq) → CH3NH3+ (aq)+ CN (aq) 19. Predict the direction in which the equilibrium will lie for the reaction H2CO3 + HCO,- + HF....
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic...
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of HCl is added (Ka HC2H3O2 = 1.75 x 10-5). Report your answer to the hundredths place. 2) Calculate the pH of the 1L buffer composed of 500 mL 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of NaOH is added (Ka HC2H3O2 = 1.75...
Which of the following cannot be a buffer solution? Group of answer choices 1.0-L solution, in...
Which of the following cannot be a buffer solution? Group of answer choices 1.0-L solution, in which 0.10 mol acetic acid (CH3COOH) and 0.050 mol potassium hydroxide (KOH) are dissolved. 0.50-L solution, in which 0.25 mol ammonia (NH3) and 0.18 mol hydrochloric acid (HCl) are dissolved. 0.75-L solution, in which 1.0 mol hydrofluoric acid (HF) and 2.0 mol sodium hydroxide (NaOH) are dissolved. 1.0-L solution, in which 3.0 mol lithium hydroxide (LiOH) and 5.0 mol formic acid (HCOOH) are dissolved....
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic...
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
Question 1 1 pts Consider a solution that is 0.1 M HF and 0.1 M NaF....
Question 1 1 pts Consider a solution that is 0.1 M HF and 0.1 M NaF. This is a mixture of conjugates in equal proportions, which tells you that it is a buffer. What two reactions are relevant to the pH in this situation? NaF --> Nat + F F+H2O <--> HF + OH- HF + NaF --> H+ +Na+ + F2 HF <--> H+ +F Ht+F<--> Nat + F" Question 2 1 pts A buffer solution contains a mixture...
4. (5 pts) Explain if pH of solution will increase, no change, or decrease) if: -...
4. (5 pts) Explain if pH of solution will increase, no change, or decrease) if: - add solid ammonium nitrate to 0.02 M nitric acid - add 1.0 g of sodium hydroxide to 100.0 mL of 1.0 M acetic acid - add 1.0 g of sodium chloride to 100.0 mL of 0.01 M HCI - add 1.0 mL of 0.10 M HCl to 20.0 mL of 0.01 M ammonia - add 0.1 g of NaOH to 100.0 L of distilled...
Which of the following would form a buffer if added to a solution of SnF2? a....
Which of the following would form a buffer if added to a solution of SnF2? a. HCI b. HE C. NaOH d. H2O a. O b. OC. d. 11a) 1.00 moles of lactic acid (HC2H5O3, Ka = 1.4 x 10-4) and 1.00 moles of sodium lactate (NaC3H5O3) are dissolved in water resulting in a solution with a final volume of 550 mL. What is the pH of the solution? a. 0.48 b. 0.96 C. 1.9 d. 3.8 a. b. O...
5. A 3.5 L sample of a 5.8 M NaCl solution is diluted to 55L. What...
5. A 3.5 L sample of a 5.8 M NaCl solution is diluted to 55L. What is the molarity of the diluted solution? 6. Consider the reaction: K Slaq) + Co(NO3)2 (aq) → 2KNO3(aq) + Cos) What volume of 0.225 M K S solution is required to completely react with 175 mL of 0.115 M CO(NO3)2? 7. For each reaction, identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid and the conjugate base a. Hl(aq) + H2O → H30*...
Can anyone check my answers, and correct me if I’m wrong? USE THE FOLLOWING SCENARIO FOR...
Can anyone check my answers, and correct me if I’m wrong?
USE THE FOLLOWING SCENARIO FOR QUESTIONS 6-10. A 25-ml sample of 0.10 Macetic acid is titrated with 15-ml 0.10 M NaOH. (K, for acetic acid - 1.8 x 10-) Titration curve Vol.Titrant added 6. Which of the following balanced equations represents the equilibrium at the 15-ml point in the titration? A. CH3COOH(aq) + H2O(1) = H30*(aq) + CH,COO"(aq) B. CH3COOH(aq) + NaOH(aq) + H2O(l) + NaCH3COO(aq) C. CHC00 (aq)...
Which one of the following mixtures will act as a buffer? 0.1 mol of CH3NH2 and...
Which one of the following mixtures will act as a buffer? 0.1 mol of CH3NH2 and 0.5 mol NaOH 0.5 mol of HCl and 0.5 mol of NaOH 0.50 mol of NH3 and 0.25 mol of NaOH 0.5 mol of HF and 0.25 mol of NaOH 0.50 mol of NH3 and 0.50 mol of HCl
17. Which of these acids is the strongest? A) H2SO3 B) H2SO3 C) H2TeO3 18. Which one of these net ionic equations represents the reaction of a strong acid with a weak base? A) H(aq) + OH(aq) + H2O(aq) B) H(aq) + CH3NH2(aq) → CH3NH3(aq) C) OH(aq) + HCN(aq) → H2O(aq) + CN-(aq) D) HCN(aq) + CH3NH2(aq) → CH3NH3+ (aq)+ CN (aq) 19. Predict the direction in which the equilibrium will lie for the reaction H2CO3 + HCO,- + HF....
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
Question 1 1 pts Consider a solution that is 0.1 M HF and 0.1 M NaF. This is a mixture of conjugates in equal proportions, which tells you that it is a buffer. What two reactions are relevant to the pH in this situation? NaF --> Nat + F F+H2O <--> HF + OH- HF + NaF --> H+ +Na+ + F2 HF <--> H+ +F Ht+F<--> Nat + F" Question 2 1 pts A buffer solution contains a mixture...
4. (5 pts) Explain if pH of solution will increase, no change, or decrease) if: - add solid ammonium nitrate to 0.02 M nitric acid - add 1.0 g of sodium hydroxide to 100.0 mL of 1.0 M acetic acid - add 1.0 g of sodium chloride to 100.0 mL of 0.01 M HCI - add 1.0 mL of 0.10 M HCl to 20.0 mL of 0.01 M ammonia - add 0.1 g of NaOH to 100.0 L of distilled...
Which of the following would form a buffer if added to a solution of SnF2? a. HCI b. HE C. NaOH d. H2O a. O b. OC. d. 11a) 1.00 moles of lactic acid (HC2H5O3, Ka = 1.4 x 10-4) and 1.00 moles of sodium lactate (NaC3H5O3) are dissolved in water resulting in a solution with a final volume of 550 mL. What is the pH of the solution? a. 0.48 b. 0.96 C. 1.9 d. 3.8 a. b. O...
5. A 3.5 L sample of a 5.8 M NaCl solution is diluted to 55L. What is the molarity of the diluted solution? 6. Consider the reaction: K Slaq) + Co(NO3)2 (aq) → 2KNO3(aq) + Cos) What volume of 0.225 M K S solution is required to completely react with 175 mL of 0.115 M CO(NO3)2? 7. For each reaction, identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid and the conjugate base a. Hl(aq) + H2O → H30*...
Can anyone check my answers, and correct me if I’m wrong?
USE THE FOLLOWING SCENARIO FOR QUESTIONS 6-10. A 25-ml sample of 0.10 Macetic acid is titrated with 15-ml 0.10 M NaOH. (K, for acetic acid - 1.8 x 10-) Titration curve Vol.Titrant added 6. Which of the following balanced equations represents the equilibrium at the 15-ml point in the titration? A. CH3COOH(aq) + H2O(1) = H30*(aq) + CH,COO"(aq) B. CH3COOH(aq) + NaOH(aq) + H2O(l) + NaCH3COO(aq) C. CHC00 (aq)...
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