What is the answer for 11, 12, and 14? and please show how you calculate it!
Homework Answers
14. There is the relation in
acid strength and pKa value that is Lower the value of pKa higher
the strength of acis so order of tge strength of acids here will
be
(D) Phosphoric acid > citric acid > carbonic acid
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What is the answer for 11, 12, and 14? and please show how you
calculate it!...
please answer both 12 and 13! and explain, thank you!! 12). (4 pts) Lactic acid builds...
please answer both 12 and 13! and explain, thank you!!
12). (4 pts) Lactic acid builds up in has a pH of 1.9. What is the K, for the a In our muscles after a workout. A solution of 0.2 M lactic acid OR •X A 1.oxloly A) 0.187 B) 0.013 C) 8.5 x 10" D) 3.2 x 10 E) 1.6 x 10" 14 POH 13. ( 4 pts) Caffeine, a stimulant in coffee and tea, is a weak base...
please explain! thank you! 13. (4 pts) Caffeine, a stimulant in coffee and tea, is a...
please explain! thank you!
13. (4 pts) Caffeine, a stimulant in coffee and tea, is a weak base that ionizes in water according to the equation. A 0.15 M solution of caffeine has a pH of 8.45. What is the Ko of caffeine. CHNO2(aq) + H2O(l) = HCHON 02 (aq) + OH(aq) A) 8.4 x 10-17 B) 5.3 x 10-11 C) 1.6 x 10 D) 0.013 E) 0.187 11 TL
7. Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M...
7. Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? A. 0.36 B. 2.4 x 10-2 C. 7.8 x 10-3 D. 1.5 x 10-5 E. None of these choices are correct. 8. Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid? A. 1.1% B. 2.2% C. 4.8%...
please explain how you got these answers!! and me 17) (5 pts) Calculate the pH of...
please explain how you got these answers!!
and me 17) (5 pts) Calculate the pH of a solution that is 0.15 Min ammonia (NH3) and 0.40 ammonium chloride, given the ionization constant of the base, kb, NH3 = 1.76 X 10 equilibrium reaction: NH3(aq) + H20 (1) 2 NH4(aq) + OH' (aq) A) 5.18 B) 8.82 C) 9.25 D) 9.50 E) 9.63 18) (5 pts) By far the most important buffer for maintaining acid-base balance in the blood is the...
Hi can someone show me how to solve these Cinnamic acid is obtained from oil of...
Hi can someone show me how to solve these
Cinnamic acid is obtained from oil of cinnamon. 125 millimoles of HCI were added to a solution containing 0.2 moles of a cinnamic acid and 0.3 moles of its conjugate base. After mixing, the pH of the solution was found to be 4.17. What is the pK, of cinnamic acid? A) 4.44 B) 4.17 C) 3.90 D) 4.93 E) 4.66 The digestive enzyme pepsin is secreted by stomach cells into an...
What is the pH of a 125mM solution of sodium lactate? Calculate the pH of a...
What is the pH of a 125mM solution of sodium lactate?
Calculate the pH of a 0.579 M aqueous solution of Lactic Acid (pKa = 3.76) Which of the following acids, if in solutions of equal concentration, is the least acidic? a) 0.1M propanoic acid pKa = 4.8 b) 0.1M octanoic acid pKa = 4.89 c) 0.1 M uric acid, pKa = 3.89 d) 0.1 M formic acid pKa = 3.75 e) All of these acids are equally acidic because...
Please help and show all work! 7. Ibuprofen is the active ingredient of the over-the-counter painkiller...
Please help and show all work!
7. Ibuprofen is the active ingredient of the over-the-counter painkiller Advil. Its structure is shown below. Like other non-steroidal anti-inflammatory drugs, it works by inhibiting the synthesis of prostaglandins involved in the inflammation, pain, and fever pathway of the body. What is the Ka of ibuprofen if a 0.55 M aqueous solution of ibuprofen has a pH of 2.58 at 25°C? OH A. 1.45 x 10-3 B. 1.26 x 10-5 C. 7.31 x 10-7...
What is the answer to question 15, 16, 17 and 18, and also how did you...
What is the answer to question 15, 16, 17 and 18, and also how
did you calculate it
15) (5 pts) equilibrium information below: Calculate the initial pH of the solution given the following reaction and Ca(OH)2(s) Ca+(aq) +20H-(ag) with Kso 1.3 x 105 A) 12.1 B) 11.8 C) 10.3 D) 8.2 E) None of these choices are correct 2x 13x6 (x) 2. 6.3x106 (x) 2 -0.0036 -10002 0.0072 16) (5 pts) How many moles of sodium acetate (conjugate base)...
using this problem as an example, does x always = 10^-ph or is there a special...
using this problem as an
example, does x always = 10^-ph or is there a special case, if so
what is that special case? thanks! this is for an ice table if that
isn't clear
30) Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? HA HT A A) 7.8 x 10-3 1.5 x 10-5 D) 0.36 C) 1.9 x...
3. Show how acetic acid, CH3COOH, ionizes in solution and calculate the pH of a 0.30...
3. Show how acetic acid, CH3COOH, ionizes in solution and calculate the pH of a 0.30 M solution of the acid. Ką for acetic acid = 1.8 x 10-5. 4. Show how aniline, CH5NH2, ionizes in solution and calculate the pH of a 0.25 M solution of the compound. Kb = 3.8 x 10-10
please answer both 12 and 13! and explain, thank you!!
12). (4 pts) Lactic acid builds up in has a pH of 1.9. What is the K, for the a In our muscles after a workout. A solution of 0.2 M lactic acid OR •X A 1.oxloly A) 0.187 B) 0.013 C) 8.5 x 10" D) 3.2 x 10 E) 1.6 x 10" 14 POH 13. ( 4 pts) Caffeine, a stimulant in coffee and tea, is a weak base...
please explain! thank you!
13. (4 pts) Caffeine, a stimulant in coffee and tea, is a weak base that ionizes in water according to the equation. A 0.15 M solution of caffeine has a pH of 8.45. What is the Ko of caffeine. CHNO2(aq) + H2O(l) = HCHON 02 (aq) + OH(aq) A) 8.4 x 10-17 B) 5.3 x 10-11 C) 1.6 x 10 D) 0.013 E) 0.187 11 TL
7. Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? A. 0.36 B. 2.4 x 10-2 C. 7.8 x 10-3 D. 1.5 x 10-5 E. None of these choices are correct. 8. Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid? A. 1.1% B. 2.2% C. 4.8%...
please explain how you got these answers!!
and me 17) (5 pts) Calculate the pH of a solution that is 0.15 Min ammonia (NH3) and 0.40 ammonium chloride, given the ionization constant of the base, kb, NH3 = 1.76 X 10 equilibrium reaction: NH3(aq) + H20 (1) 2 NH4(aq) + OH' (aq) A) 5.18 B) 8.82 C) 9.25 D) 9.50 E) 9.63 18) (5 pts) By far the most important buffer for maintaining acid-base balance in the blood is the...
Hi can someone show me how to solve these
Cinnamic acid is obtained from oil of cinnamon. 125 millimoles of HCI were added to a solution containing 0.2 moles of a cinnamic acid and 0.3 moles of its conjugate base. After mixing, the pH of the solution was found to be 4.17. What is the pK, of cinnamic acid? A) 4.44 B) 4.17 C) 3.90 D) 4.93 E) 4.66 The digestive enzyme pepsin is secreted by stomach cells into an...
What is the pH of a 125mM solution of sodium lactate?
Calculate the pH of a 0.579 M aqueous solution of Lactic Acid (pKa = 3.76) Which of the following acids, if in solutions of equal concentration, is the least acidic? a) 0.1M propanoic acid pKa = 4.8 b) 0.1M octanoic acid pKa = 4.89 c) 0.1 M uric acid, pKa = 3.89 d) 0.1 M formic acid pKa = 3.75 e) All of these acids are equally acidic because...
Please help and show all work!
7. Ibuprofen is the active ingredient of the over-the-counter painkiller Advil. Its structure is shown below. Like other non-steroidal anti-inflammatory drugs, it works by inhibiting the synthesis of prostaglandins involved in the inflammation, pain, and fever pathway of the body. What is the Ka of ibuprofen if a 0.55 M aqueous solution of ibuprofen has a pH of 2.58 at 25°C? OH A. 1.45 x 10-3 B. 1.26 x 10-5 C. 7.31 x 10-7...
What is the answer to question 15, 16, 17 and 18, and also how
did you calculate it
15) (5 pts) equilibrium information below: Calculate the initial pH of the solution given the following reaction and Ca(OH)2(s) Ca+(aq) +20H-(ag) with Kso 1.3 x 105 A) 12.1 B) 11.8 C) 10.3 D) 8.2 E) None of these choices are correct 2x 13x6 (x) 2. 6.3x106 (x) 2 -0.0036 -10002 0.0072 16) (5 pts) How many moles of sodium acetate (conjugate base)...
using this problem as an
example, does x always = 10^-ph or is there a special case, if so
what is that special case? thanks! this is for an ice table if that
isn't clear
30) Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? HA HT A A) 7.8 x 10-3 1.5 x 10-5 D) 0.36 C) 1.9 x...
3. Show how acetic acid, CH3COOH, ionizes in solution and calculate the pH of a 0.30 M solution of the acid. Ką for acetic acid = 1.8 x 10-5. 4. Show how aniline, CH5NH2, ionizes in solution and calculate the pH of a 0.25 M solution of the compound. Kb = 3.8 x 10-10
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