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#3 & #4 explanation please
3. A A buffer is prepared by dissolving 3.58 g of...
JA buffer is prepared by dissolving 3.58 g of for c acid (????) and 5.95 g...
JA buffer is prepared by dissolving 3.58 g of for c acid (????) and 5.95 g of potassium) formate (KCOH) in enough water to make 250 mL. of solution. What is the pH? Formic acid has a pK, of 3.80.
24. (25 points) A buffer solution was prepared by dissolving 0.500 mol formic acid and 0.060...
24. (25 points) A buffer solution was prepared by dissolving 0.500 mol formic acid and 0.060 mol sodium formate in enough water to make 1 L of solution, K, for formic acid is 1.80 x 104 a) Calculate the pH of the solution. b) If this solution was diluted to 10 times its volume, what would be the pH.
A buffer is prepared by dissolving HF and NaF in water. Which of the following is...
A buffer is prepared by dissolving HF and NaF in water. Which of the following is the net ionic equation describing how the buffer neutralizes an acid (H+) that is added to the buffer? a. H+ + OH-H20 b. H+ + NaF-Nat + HF c. H + HF-HF d. H* + H20-H30* e. H +F HF For the reaction: N2(g) + 3H2(g) 22 NH3(g) first calculate AGº using values from Table 6, and then calculate AG at 298 K when...
A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium...
A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium formate 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 with the present in the buffer solution. The K, of formic acid is 1.8 x 10+ A formic acid B. sodium formate C water D. sodium E....
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...
1) a) The decomposition of ammonia is: 2 NHgN(g) +3 H2(g). If the pressure of ammonia...
1) a) The decomposition of ammonia is: 2 NHgN(g) +3 H2(g). If the pressure of ammonia is 1.0 x 10-3 atm, and the pressures of N2 and H2 are each 0.20 atm what is the value for K at 400°C for the reverse reaction? d) What is the [CH&COrVICH:CO,H] ratio necessary to make a buffer solution with a pH of 4.44? K 1.8 x 103 for CH3CO2H. What is the pH of a buffer system prepared by dissolving 10.70 grams...
help me out, please! answer all the multiple choice. (15) A phosphate buffer solution is prepared by mixing 100. m...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
A buffer solution is able to maintain a constant pH when small amounts of acid or...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
Please I need help on this. I'm so lost 1. Acetic acid (H)CO2H) has k, =...
Please I need help on this. I'm so lost
1. Acetic acid (H)CO2H) has k, = 1.8 x 10- and acetate (H:C:01") has ks = 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 ion. (b) Write K, and equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that Kx. = 1.0 x 10-* = [H,O'][OH). 2. For each...
Can you please answer all my questions please. I really need the answers to all the...
Can you please answer all my questions please. I
really need the answers to all the questions please
ORC221F/101/3/2019 48. Which of the following statements about benzene is INCORRECT? (1) All twelve atoms do not lie in the same plane (2) All the carbon atoms are sp2 hybridized (3) The C-H bonds are all the same length (4) The electrophilic aromatic substitution reaction is a common reaction type 49. Name the following compound according to the IUPAC nomenclature. (1) N-ethyl-2-bromo-2-methyl-2-pentanamine...
JA buffer is prepared by dissolving 3.58 g of for c acid (????) and 5.95 g of potassium) formate (KCOH) in enough water to make 250 mL. of solution. What is the pH? Formic acid has a pK, of 3.80.
24. (25 points) A buffer solution was prepared by dissolving 0.500 mol formic acid and 0.060 mol sodium formate in enough water to make 1 L of solution, K, for formic acid is 1.80 x 104 a) Calculate the pH of the solution. b) If this solution was diluted to 10 times its volume, what would be the pH.
A buffer is prepared by dissolving HF and NaF in water. Which of the following is the net ionic equation describing how the buffer neutralizes an acid (H+) that is added to the buffer? a. H+ + OH-H20 b. H+ + NaF-Nat + HF c. H + HF-HF d. H* + H20-H30* e. H +F HF For the reaction: N2(g) + 3H2(g) 22 NH3(g) first calculate AGº using values from Table 6, and then calculate AG at 298 K when...
A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium formate 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 with the present in the buffer solution. The K, of formic acid is 1.8 x 10+ A formic acid B. sodium formate C water D. sodium E....
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...
1) a) The decomposition of ammonia is: 2 NHgN(g) +3 H2(g). If the pressure of ammonia is 1.0 x 10-3 atm, and the pressures of N2 and H2 are each 0.20 atm what is the value for K at 400°C for the reverse reaction? d) What is the [CH&COrVICH:CO,H] ratio necessary to make a buffer solution with a pH of 4.44? K 1.8 x 103 for CH3CO2H. What is the pH of a buffer system prepared by dissolving 10.70 grams...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
Please I need help on this. I'm so lost
1. Acetic acid (H)CO2H) has k, = 1.8 x 10- and acetate (H:C:01") has ks = 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 ion. (b) Write K, and equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that Kx. = 1.0 x 10-* = [H,O'][OH). 2. For each...
Can you please answer all my questions please. I
really need the answers to all the questions please
ORC221F/101/3/2019 48. Which of the following statements about benzene is INCORRECT? (1) All twelve atoms do not lie in the same plane (2) All the carbon atoms are sp2 hybridized (3) The C-H bonds are all the same length (4) The electrophilic aromatic substitution reaction is a common reaction type 49. Name the following compound according to the IUPAC nomenclature. (1) N-ethyl-2-bromo-2-methyl-2-pentanamine...
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