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![- Reactant - Product keq = [product] ( Reactant . equilibrium if keq > 1 . product keq > lies Reactant to the at Right if keq](http://img.homeworklib.com/questions/15c965f0-704d-11ea-89be-d371927ec969.png?x-oss-process=image/resize,w_560)
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For which of the following Keg values does the equilibrium lie to the left? a) Keo...
30 For which of the following Keg values does the equilibrium lie to the right? a)...
30 For which of the following Keg values does the equilibrium lie to the right? a) Keq = 1 x 10-14 b) Keq = 1 x 10-4 c) Keq = 1 x 105 d) Keg = 1 x 1015 e) no correct response 32 According to collision theory, which of the following factors influences the rate of a reaction? Choose all that apply. a) the molar mass of the reactants b) the pH of the reactants c) the physical state...
Question 11 3 pts Predict the direction in which the equilibrium will lie for the following...
Question 11 3 pts Predict the direction in which the equilibrium will lie for the following reaction: H2SO3 + HCO3 ---> HSO + H2CO3 K, H2SO3 -1.0 x 102 K, H2CO3.4.2x107 to the right to the left In the middle
Predict the direction in which the equilibrium will lie for the following reaction: C_6H_5COO^- + HF...
Predict the direction in which the equilibrium will lie for the following reaction: C_6H_5COO^- + HF C_6H_5COOH + F^- K_a (C_6H_5 COOH) = 6.5 Times 10^ - 5; K_a (HF) = 7.1 Times 10^ - 4 Which of the following yields a basic solution when dissolved in water? NH_3, Na_2O LiOH CO_2 1 and II 1 and III 1, III, and IV 1, II, and III 1, II, III, and IV Calculate the pH of a 6.7 Times 10^-2 M...
. Predict the direction in which the equilibrium will lie for the reaction NO2- (aq) +...
. Predict the direction in which the equilibrium will lie for the reaction NO2- (aq) + HClO3(aq) <----> HNO2(aq) + ClO3- (aq) Ka(HNO2) = 4 X 10-4 A) reactants will be favored B) products will be favored C) cannot be determined D) reactants and products will be equally favored E) depends on Kb values which are not given.
Homework Question 8.16 Determine (or estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6. Values in Ta...
Homework
Question 8.16 Determine (or
estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6.
Values in Table 9.3 may be helpful.
Homework Question 8.16 Unanswered Determine (or estimate) the pKaof an acid with an acidity constant Ka=1x10-6. Values in Table 9.3 may be helpful. Type your response Table 8.3 Acidity Constants of Some Bronsted-Lowry Acids Acid, HA K pk Strong acids hydrolodic 2010 hydobromic acid hydrochloric acid sulfuric acid HUSO HIND nitric acid Weak acids...
8. What is the pH of a 5.00 x 102 M Ba(OH)2(aq) solution at room temperature?...
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...
3. Consider the following weak acids and their K, values, calculate the pK, for each acid....
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...
The following plot shows the pH curves for the titrations of various acids by 0.10 M NaOH (all of...
29. a,b,c
The following plot shows the pH curves for the titrations of various acids by 0.10 M NaOH (all of the acids were 50.0-mL samples of 0.10 M concentration). 12.0 10.0 8.0 6.0 4.0 2.0 0 10 20 30 40 50 60 Vol 0.10 M NaOH added (mL) a. Which pH curve corresponds to the weakest acid? b. Which pH curve corresponds to the strongest acid? Which point on the pH curve would you examine to see if this...
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak...
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...
Titration Curves of Pre-lab questions. rves of Strong and Weak Acids and Bases. e 1. Explain...
Titration Curves of Pre-lab questions. rves of Strong and Weak Acids and Bases. e 1. Explain the difference between a stre xplain the difference between a strong acid and a weak acid. **Calculate the pH of an HC Solution in which the H.01 -1.75 x 10°M. Calculate the pH of a NAOH solution in which the (OH) 3.7 x 10" M. Labc 4. Calculate the [H.O') when pH = 7.42 5. Calculate the [H3O+] when pOH = 5.43 6. Calculate...
30 For which of the following Keg values does the equilibrium lie to the right? a) Keq = 1 x 10-14 b) Keq = 1 x 10-4 c) Keq = 1 x 105 d) Keg = 1 x 1015 e) no correct response 32 According to collision theory, which of the following factors influences the rate of a reaction? Choose all that apply. a) the molar mass of the reactants b) the pH of the reactants c) the physical state...
Question 11 3 pts Predict the direction in which the equilibrium will lie for the following reaction: H2SO3 + HCO3 ---> HSO + H2CO3 K, H2SO3 -1.0 x 102 K, H2CO3.4.2x107 to the right to the left In the middle
Predict the direction in which the equilibrium will lie for the following reaction: C_6H_5COO^- + HF C_6H_5COOH + F^- K_a (C_6H_5 COOH) = 6.5 Times 10^ - 5; K_a (HF) = 7.1 Times 10^ - 4 Which of the following yields a basic solution when dissolved in water? NH_3, Na_2O LiOH CO_2 1 and II 1 and III 1, III, and IV 1, II, and III 1, II, III, and IV Calculate the pH of a 6.7 Times 10^-2 M...
Homework
Question 8.16 Determine (or
estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6.
Values in Table 9.3 may be helpful.
Homework Question 8.16 Unanswered Determine (or estimate) the pKaof an acid with an acidity constant Ka=1x10-6. Values in Table 9.3 may be helpful. Type your response Table 8.3 Acidity Constants of Some Bronsted-Lowry Acids Acid, HA K pk Strong acids hydrolodic 2010 hydobromic acid hydrochloric acid sulfuric acid HUSO HIND nitric acid Weak acids...
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...
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...
29. a,b,c
The following plot shows the pH curves for the titrations of various acids by 0.10 M NaOH (all of the acids were 50.0-mL samples of 0.10 M concentration). 12.0 10.0 8.0 6.0 4.0 2.0 0 10 20 30 40 50 60 Vol 0.10 M NaOH added (mL) a. Which pH curve corresponds to the weakest acid? b. Which pH curve corresponds to the strongest acid? Which point on the pH curve would you examine to see if this...
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...
Titration Curves of Pre-lab questions. rves of Strong and Weak Acids and Bases. e 1. Explain the difference between a stre xplain the difference between a strong acid and a weak acid. **Calculate the pH of an HC Solution in which the H.01 -1.75 x 10°M. Calculate the pH of a NAOH solution in which the (OH) 3.7 x 10" M. Labc 4. Calculate the [H.O') when pH = 7.42 5. Calculate the [H3O+] when pOH = 5.43 6. Calculate...
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