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Question 36 (1 point) What is the pH of a buffer made...
please help as soon as possible ergent Question 35 (1 point) Which salt produces a basic...
please help as soon as possible ergent
Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NH4B NaNO2 OKCI Question 36 (1 point) What is the pH of a buffer made by combining 0.136 M nitrous acid and 0.176 M sodium nitrite? The Ka of nitrous acid, HNO2. is 4.5x10-4 Your Answer: Answer Question 37 (1 point) iron to formirani oxide Question 33 (1 point) What is the pH of a 0.033 M solution...
Post-Lab Assignment: pH and Buffers 1. A buffer is prepared from a weak acid with a...
Post-Lab Assignment: pH and Buffers 1. A buffer is prepared from a weak acid with a Ka - 7.1 x 104 and its conjugate base. a. What pH would provide maximum buffer capacity? b. What would be the buffer range for this acid? (Your answer should show the lowest and the highest pH that would provide a reasonably effective buffer.) 2. If you were provided with a 0.1 M solution of an unknown weak acid and a 0.1 M solution...
please draw a circle around the answer W Question 1 What is the pH of a...
please draw a circle around the answer
W Question 1 What is the pH of a 0.15 M solution of potassium nitrite (KNO 21? (Ka value for its acid part HNO 2 nitrous acid - 3.0*10-4 O a 7.00 6.789 OC835 571 0.829 Question 5 A solution with a pOH of 10.50 has an (H) of 2.5.0 x 10-3 M. b.3.2 x 10-4 M. c. 0.36 M. d. 2.30 M. O e 2.0 x 10-12 M
0.1673 O 0.5220 0.01994 Question 7 (1 point) Saved How many moles of H* are in...
0.1673 O 0.5220 0.01994 Question 7 (1 point) Saved How many moles of H* are in 120.0 mL of an HCl stock solution if a 30.00 mL aliquot was titrated with 51.46 mL of 0.1100 M NaOH? 0.01052 0.1887 0.04561 0.02264 0.7580 Question 8 (1 point) Saved Hydrocyanic acid (HCN) is a much weaker acid than nitrous acid (HNO2). The pH MacBook Air
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is...
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is a strong acid and HNO2 is a weak acid, state which of the following statements is true. There are between 1 and 4 correct answers. a A1 M solution of HNO, would have a lower pH than a 1 M solution of HNO2. A1 M solution of HNO3 would have a higher pH than a 1 M solution of HNO2. Ob OC HNO, is...
help please asap Question 32 (1 point) What is the pH of a 0.056 M aqueous...
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Question 32 (1 point) What is the pH of a 0.056 M aqueous acetic acid solution? kg = 1.8 x 10-5. Your Answer: Answer Question 31 (1 point) A solution was made by adding 72 g of ethanol, C2H5OH, to 629 g of water. How much would this lower the freezing point? The freezing point depression constant, Kf, of water is 1.86 °C•m-1 and the molar mass of ethanol is 46.08 g.mol-1. (Don't use the degree sign...
Top question. P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45...
Top question.
P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45 moles of formic acid HCO2H, and 0.40 moles of sodium formate, NaCO,H, in enough water to make a 1.0-liter solution? (Formic Acid: K 1.81 10-) a) 4.32 b) 3.69 c) 5.52 d) 7.32 e) 9.11 P2. (Sec. 16.2) What is the pH of a solution prepared by adding 100 mL of a 0.25 M solution of sodium acetate, NaC2H,O2, into 110 mL of 0.30...
Question 8 (1 point) What is the pH of a 0.79 M solution of potassium nitrite...
Question 8 (1 point) What is the pH of a 0.79 M solution of potassium nitrite (KNO2)? Report your answer to 2 der mal places Your Answer: Answer
please help The following table, used for question 16, is partially complete: (ОН) pH 2.68 pОН...
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The following table, used for question 16, is partially complete: (ОН) pH 2.68 pОН ener 8.4 x 10 euen 16. (3 points) Fill in the six empty cells in the table. The following table, used for questions 2-8, is partially complete: Ka 1.8 x 10 pka Conj. Base formula pKb Acid Formula CH3COOH HOBI HNO2 5.40 3.14 2.2 x 10 Sec 17. (6 points) Fill in the twelve empty cells of the table above. 18. What is the...
help me please asap Question 20 (1 point) What is the half-life of the radioactive isotope...
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Question 20 (1 point) What is the half-life of the radioactive isotope from the first-order decay plot below? 1 09 concentration OS 0.4 03 02 0.1 0 0 20 40 60 80 100 120 140 160 180 200 time (hours) 140 hours 35 hours 60 hours 70 hours Question 19 (1 point) For the reaction H2(g) + C2H4(g) → C2H.(g) a series of experiments were conducted as shown in the table. If the rate law was...
please help as soon as possible ergent
Question 35 (1 point) Which salt produces a basic solution when dissolved in water? FeCl3 NH4B NaNO2 OKCI Question 36 (1 point) What is the pH of a buffer made by combining 0.136 M nitrous acid and 0.176 M sodium nitrite? The Ka of nitrous acid, HNO2. is 4.5x10-4 Your Answer: Answer Question 37 (1 point) iron to formirani oxide Question 33 (1 point) What is the pH of a 0.033 M solution...
Post-Lab Assignment: pH and Buffers 1. A buffer is prepared from a weak acid with a Ka - 7.1 x 104 and its conjugate base. a. What pH would provide maximum buffer capacity? b. What would be the buffer range for this acid? (Your answer should show the lowest and the highest pH that would provide a reasonably effective buffer.) 2. If you were provided with a 0.1 M solution of an unknown weak acid and a 0.1 M solution...
please draw a circle around the answer
W Question 1 What is the pH of a 0.15 M solution of potassium nitrite (KNO 21? (Ka value for its acid part HNO 2 nitrous acid - 3.0*10-4 O a 7.00 6.789 OC835 571 0.829 Question 5 A solution with a pOH of 10.50 has an (H) of 2.5.0 x 10-3 M. b.3.2 x 10-4 M. c. 0.36 M. d. 2.30 M. O e 2.0 x 10-12 M
0.1673 O 0.5220 0.01994 Question 7 (1 point) Saved How many moles of H* are in 120.0 mL of an HCl stock solution if a 30.00 mL aliquot was titrated with 51.46 mL of 0.1100 M NaOH? 0.01052 0.1887 0.04561 0.02264 0.7580 Question 8 (1 point) Saved Hydrocyanic acid (HCN) is a much weaker acid than nitrous acid (HNO2). The pH MacBook Air
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is a strong acid and HNO2 is a weak acid, state which of the following statements is true. There are between 1 and 4 correct answers. a A1 M solution of HNO, would have a lower pH than a 1 M solution of HNO2. A1 M solution of HNO3 would have a higher pH than a 1 M solution of HNO2. Ob OC HNO, is...
help please asap
Question 32 (1 point) What is the pH of a 0.056 M aqueous acetic acid solution? kg = 1.8 x 10-5. Your Answer: Answer Question 31 (1 point) A solution was made by adding 72 g of ethanol, C2H5OH, to 629 g of water. How much would this lower the freezing point? The freezing point depression constant, Kf, of water is 1.86 °C•m-1 and the molar mass of ethanol is 46.08 g.mol-1. (Don't use the degree sign...
Top question.
P1. (Sec. 16.2) What is the pH of a solution prepared by adding 0.45 moles of formic acid HCO2H, and 0.40 moles of sodium formate, NaCO,H, in enough water to make a 1.0-liter solution? (Formic Acid: K 1.81 10-) a) 4.32 b) 3.69 c) 5.52 d) 7.32 e) 9.11 P2. (Sec. 16.2) What is the pH of a solution prepared by adding 100 mL of a 0.25 M solution of sodium acetate, NaC2H,O2, into 110 mL of 0.30...
Question 8 (1 point) What is the pH of a 0.79 M solution of potassium nitrite (KNO2)? Report your answer to 2 der mal places Your Answer: Answer
please help
The following table, used for question 16, is partially complete: (ОН) pH 2.68 pОН ener 8.4 x 10 euen 16. (3 points) Fill in the six empty cells in the table. The following table, used for questions 2-8, is partially complete: Ka 1.8 x 10 pka Conj. Base formula pKb Acid Formula CH3COOH HOBI HNO2 5.40 3.14 2.2 x 10 Sec 17. (6 points) Fill in the twelve empty cells of the table above. 18. What is the...
help me please asap
Question 20 (1 point) What is the half-life of the radioactive isotope from the first-order decay plot below? 1 09 concentration OS 0.4 03 02 0.1 0 0 20 40 60 80 100 120 140 160 180 200 time (hours) 140 hours 35 hours 60 hours 70 hours Question 19 (1 point) For the reaction H2(g) + C2H4(g) → C2H.(g) a series of experiments were conducted as shown in the table. If the rate law was...
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