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Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-...
Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 1. Acetic acid (HCO,H) has k, = 1.8 x 10- and acetate (HCO3") has ke -5.6 x 10-10 (a) Write balanced chemical equilibrium equations (with physical states) for acid dissociation of acetic acid and base hydrolysis of acetate lon. (b) Write K, and K, equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that KK - 1.0...
5. Label each of the following aqueous sper with negligible basicity. In each case write the...
5. Label each of the following aqueous sper with negligible basicity. In each case write the formu the conjugate acid is strong, weak, or a species w species, including formal charges. (a) CH3CO2- (acetate ion) Jeous species as being a strong base, a weak base, or a species te the formula of its conjugate acid, and indicate whether species with negligible acidity. Draw Lewis structures for all (b) NH3 (c) 02- (d) HS-
Help please and show all work! Problem Set 14 CHEM 1252 November 4, 2019 4. At...
Help please and show all work!
Problem Set 14 CHEM 1252 November 4, 2019 4. At 25 °C, K= 1.0 x 10-14, while at 0 °C, K= 1.2 x 10-15 (a) Explain whether water becomes a stronger or weaker acid as temperature decreases. (b) Write the equilibrium constant expression for the ionization of water to hydronium ion and hydroxide and calculate the concentrations of [H3O*] and [OH in pure water at 0 °C. (c) An aqueous solution at 25 °C...
Problem Set 15 CHEM 1252 November 10, 2019 4. A 0.100 M solution of bromoacetic acid...
Problem Set 15 CHEM 1252 November 10, 2019 4. A 0.100 M solution of bromoacetic acid (BrCH COH) is 13.2% Ionized dissociated). (a) Calculate [H3O+] (or "[*]"), [BrCH.CO." ] (or "[A-]"), and (BrCH2COH) (or "CHA]"). (b) Calculate K, and pk, for bromoacetic acid. 5. Ethylamine (CHCH NH) is a weak base in water. (a) Write a balanced chemical equilibrium reaction for the base hydrolysis of ethylamine. Label the acid, base, conjugate acid, and conjugate base. (b) Would you expect ethylammonium...
Help please and show all work! 5. Label each of the following aqueous species as being...
Help please and show all work!
5. Label each of the following aqueous species as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is strong, weak, or a species with negligible acidity. Draw Lewis structures for all species, including formal charges. (a) CH3C02- (acetate ion) (b) NH3 (c) 02- (d) HS-
23/24/25 Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the...
23/24/25
Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the numerator or denominator may contain more than one chemical species. Enter the complete numerator in the top box and the complete denominator in the bottom box. Remember to write the hydronium ion out as H2O+, and not as H) rap Write the K expression for an aqueous solution of hydrocyanic acid: (Note that either the numerator or denominator may contain more than one chemical...
16) The molar concentration of hydronium ion in pure water at 25°C is 1.0 x 10...
16) The molar concentration of hydronium ion in pure water at 25°C is 1.0 x 10 b) 0.00 c) 1.0 x 1014 d) 1.0 e) 7.00 17) A solution is prepared by dissolving 0.23 mol of hydrazoic acid and 0.27 mol of sodium azide in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly. The pH does not increase drastically because the NaOH reacts...
Problem Set 14 November 4, 2019 CHEM 1252 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15.12.19.21,24,28-31,35,37,4...
Problem Set 14 November 4, 2019 CHEM 1252 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15.12.19.21,24,28-31,35,37,4 . Acetic acid (HCOH) has 1.8 10-5 and acetate (HCO) has (a) Write balanced chemical equilibrium equations (with physical state acetic acid and base hydrolysis of acetate lon. 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 acetate (HCO") has = 5.6 x 10-10, $(with physical states) for acid dissociation of (b) Write K, and equilibrium constant expressions for the above reactions (c) Use your expressions from part b to show that...
1) The hydroxide ion concentration in an aqueous solution at 25°C is 6.4×10-2 M. The hydronium...
1) The hydroxide ion concentration in an aqueous solution at 25°C is 6.4×10-2 M. The hydronium ion concentration is M. The pH of this solution is ____. The pOH is _____. 2) The hydronium ion concentration in an aqueous solution at 25°C is 3.6×10-2M. The hydroxide ion concentration is _____M. The pH of this solution is ____ The pOH is ____ 3) What is the pOH of an aqueous solution of 0.467 M hydrochloric acid? pOH = ____ 4) What is...
13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is...
13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is a) a weak base b) a weak acid c) a strong base a strong acid e) a salt 14) In basic solution, a) [H30'> [OH] b) [H30 ]- [OH1 [Hs0)< [OH] d) (OH]<7.00 e) [OH] =OM 15) The pH of a 0.63 M aqueous solution of hypobromous acid, HBro, at 25°C is 4.17. What is the value of K for HBro? a2.0 x 10...
Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 1. Acetic acid (HCO,H) has k, = 1.8 x 10- and acetate (HCO3") has ke -5.6 x 10-10 (a) Write balanced chemical equilibrium equations (with physical states) for acid dissociation of acetic acid and base hydrolysis of acetate lon. (b) Write K, and K, equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that KK - 1.0...
5. Label each of the following aqueous sper with negligible basicity. In each case write the formu the conjugate acid is strong, weak, or a species w species, including formal charges. (a) CH3CO2- (acetate ion) Jeous species as being a strong base, a weak base, or a species te the formula of its conjugate acid, and indicate whether species with negligible acidity. Draw Lewis structures for all (b) NH3 (c) 02- (d) HS-
Help please and show all work!
Problem Set 14 CHEM 1252 November 4, 2019 4. At 25 °C, K= 1.0 x 10-14, while at 0 °C, K= 1.2 x 10-15 (a) Explain whether water becomes a stronger or weaker acid as temperature decreases. (b) Write the equilibrium constant expression for the ionization of water to hydronium ion and hydroxide and calculate the concentrations of [H3O*] and [OH in pure water at 0 °C. (c) An aqueous solution at 25 °C...
Problem Set 15 CHEM 1252 November 10, 2019 4. A 0.100 M solution of bromoacetic acid (BrCH COH) is 13.2% Ionized dissociated). (a) Calculate [H3O+] (or "[*]"), [BrCH.CO." ] (or "[A-]"), and (BrCH2COH) (or "CHA]"). (b) Calculate K, and pk, for bromoacetic acid. 5. Ethylamine (CHCH NH) is a weak base in water. (a) Write a balanced chemical equilibrium reaction for the base hydrolysis of ethylamine. Label the acid, base, conjugate acid, and conjugate base. (b) Would you expect ethylammonium...
Help please and show all work!
5. Label each of the following aqueous species as being a strong base, a weak base, or a species with negligible basicity. In each case write the formula of its conjugate acid, and indicate whether the conjugate acid is strong, weak, or a species with negligible acidity. Draw Lewis structures for all species, including formal charges. (a) CH3C02- (acetate ion) (b) NH3 (c) 02- (d) HS-
23/24/25
Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the numerator or denominator may contain more than one chemical species. Enter the complete numerator in the top box and the complete denominator in the bottom box. Remember to write the hydronium ion out as H2O+, and not as H) rap Write the K expression for an aqueous solution of hydrocyanic acid: (Note that either the numerator or denominator may contain more than one chemical...
16) The molar concentration of hydronium ion in pure water at 25°C is 1.0 x 10 b) 0.00 c) 1.0 x 1014 d) 1.0 e) 7.00 17) A solution is prepared by dissolving 0.23 mol of hydrazoic acid and 0.27 mol of sodium azide in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly. The pH does not increase drastically because the NaOH reacts...
Problem Set 14 November 4, 2019 CHEM 1252 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15.12.19.21,24,28-31,35,37,4 . Acetic acid (HCOH) has 1.8 10-5 and acetate (HCO) has (a) Write balanced chemical equilibrium equations (with physical state acetic acid and base hydrolysis of acetate lon. 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 acetate (HCO") has = 5.6 x 10-10, $(with physical states) for acid dissociation of (b) Write K, and equilibrium constant expressions for the above reactions (c) Use your expressions from part b to show that...
13) A 0.0035 M aqueous solution of a particular compound has pOH 11.54. The compound is a) a weak base b) a weak acid c) a strong base a strong acid e) a salt 14) In basic solution, a) [H30'> [OH] b) [H30 ]- [OH1 [Hs0)< [OH] d) (OH]<7.00 e) [OH] =OM 15) The pH of a 0.63 M aqueous solution of hypobromous acid, HBro, at 25°C is 4.17. What is the value of K for HBro? a2.0 x 10...
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