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![(a) pH = 8.35 pon = 14-8.35 = 5.65 Con ] = 2.24 x 106 moles of Ht Requirs to neutralise 2-24x10-6 also to reach the pH = 6 il](http://img.homeworklib.com/questions/fb3fb0d0-7539-11ea-a33d-7dad7c8fd3c0.png?x-oss-process=image/resize,w_560)
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3. A solution is at pH 8.35 and has reached equilibrium with the atmosphere. (a) How...
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH...
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH and 0.05 mole of sodium acetate CH3COONa. Calculate a. pH of that solution b. How much of a strong base, say NaOH, in mol/L needs to be added to that solution to change its pH to 6.0? Notes and useful data: For acetic acid pK4.75 For carbonic acid pKa 6.3 and pKa 10.3 Sodium acetate CH3COONa dissociates entirely to Na'CH3COO
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric...
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric acid (H3PO4), a triprotic acid, has 3 pKa values: 2.14, 6.86, and 12.4. Hint: Only one of the pKa values is relevant here. 5. For a weak acid with a pKaof 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0. 6. Which of these compounds would be the best buffer at pH 5.0: formic acid (pKa 3.8), acetic acid...
Post Lab Activity Acids, Bases, pH, and Buffers 1. Calculate the pH of a 0.08 M NaOH solution. 2. Hydrochloric acid...
Post Lab Activity Acids, Bases, pH, and Buffers 1. Calculate the pH of a 0.08 M NaOH solution. 2. Hydrochloric acid is a strong acid and dissociate almost 100% in aqueous solution. If two drops (0.1 mL) of 1.0 MHCI are added to pure water to make 1.0 L solution. What is the pH of this solution? 3. M. What will be the A dilute solution of hydrochloric acid (HCI) has a concentration of 0.1 pH of this solution? 4....
1. Calculate the equilibrium concentrations of all species present and the pH of a solution obtained...
1. Calculate the equilibrium concentrations of all species present and the pH of a solution obtained by adding 0.100 moles of solid NaOH to 1.00 L of 15.0 M NH3. Kb = 1.8 × 10–5 2. One mole of a weak acid HA was dissolved in 2.0 L of water. After the system had come to equilibrium, the concentration of HA was found to be 0.45 M. Calculate the Ka for this weak acid. 3. Calculate the pH of a...
Assuming that an acid (AH) which has pKa=5.7 is added to the buffered solution with pH=6.8....
Assuming that an acid (AH) which has pKa=5.7 is added to the buffered solution with pH=6.8. Calculate percentage of non-ionized acid (AH) that will appear in the solution once the equilibrium is reached. Answer is numerical. Round the answer to the nearest whole number. Don't write % simbol in the answer.
Multi part question Tutored Practice Problem 17.2.3 COUNTS TOWARDS GRADE Calculate pH of a weak base/conjugate acid buffer solution A 0.420-M aqueous solution of C5H;N (pyridine) has a pH of 9.40. Ca...
Multi part question
Tutored Practice Problem 17.2.3 COUNTS TOWARDS GRADE Calculate pH of a weak base/conjugate acid buffer solution A 0.420-M aqueous solution of C5H;N (pyridine) has a pH of 9.40. Calculate the pH of a buffer solution that is 0.420 M in C5H5N and 0.178 M in C;H5NH pH- Consider how to prepare a buffer solution with pH 3.03 (using one of the weak acid/conjugate base systems shown here) by combining 1.00 L of a 0.370-M solution of weak...
What is the pH of a solution that has a hydroxide concentration of 1.9 X 10-5...
What is the pH of a solution that has a hydroxide concentration of 1.9 X 10-5 M? What is the pH of a 0.056 M solution of H2SO4? H2SO4 is a strong acid. Calculate the pH of a 0.50 M solution of Sr(OH)2. Sr(OH)2 is a strong base. Mylanta liquid has 200 mg of Al(OH)3 and 200 mg of Mg(OH)2 per teaspoonful. Write the equation for the neutralization of stomach acid. Assuming both bases are completely soluble in water, calculate...
calculate the molar solubility of Cr(OH)3 in a solution with a pH of 11.5 knowing that...
calculate the molar solubility of Cr(OH)3 in a
solution with a pH of 11.5 knowing that Ksp(Cr(OH)3) = 6.7 x
10^(-31)
1. Calculate the molar solubility of Cr(OH), in a solution with a pH of 11.5 knowing that Kop(Cr(OH)2) = 6.7 x 10" 2. What is the pH of a 0.895M sodium fluoride (NaF) solution knowing that the hydrofluoric acid is 7.11 x 10 of 3. Calculate the molar solubility of antimony sulfide (Sb2S) in water knowing K =1.6 x...
Question two A buffer solution is able to maintain a constant pH when small amounts of...
Question two
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,O2. The initial concentration of both the acid and the base are 0.0100 mol/0.1000...
QUESTION 1 A solution of acid HA is prepared at four different concentrations: 2.0 mol L...
QUESTION 1 A solution of acid HA is prepared at four different concentrations: 2.0 mol L –1, 0.20 mol L –1, 0.020mol L –1, and 0.0020 mol L –1. Which of the four acid solutions will be least ionized? a. 0.0020 mol L–1 b. 2.0 mol L–1 c. 0.20 mol L–1 d. 0.020 mol L QUESTION 2. Which of the following best describes a buffer solution? a. The solution doesn’t change pH, even if large amounts of acid or base...
3. One liter of buffer solution was prepared by mixing 0.1 mole of acetic acid CH3COOH and 0.05 mole of sodium acetate CH3COONa. Calculate a. pH of that solution b. How much of a strong base, say NaOH, in mol/L needs to be added to that solution to change its pH to 6.0? Notes and useful data: For acetic acid pK4.75 For carbonic acid pKa 6.3 and pKa 10.3 Sodium acetate CH3COONa dissociates entirely to Na'CH3COO
Post Lab Activity Acids, Bases, pH, and Buffers 1. Calculate the pH of a 0.08 M NaOH solution. 2. Hydrochloric acid is a strong acid and dissociate almost 100% in aqueous solution. If two drops (0.1 mL) of 1.0 MHCI are added to pure water to make 1.0 L solution. What is the pH of this solution? 3. M. What will be the A dilute solution of hydrochloric acid (HCI) has a concentration of 0.1 pH of this solution? 4....
Multi part question
Tutored Practice Problem 17.2.3 COUNTS TOWARDS GRADE Calculate pH of a weak base/conjugate acid buffer solution A 0.420-M aqueous solution of C5H;N (pyridine) has a pH of 9.40. Calculate the pH of a buffer solution that is 0.420 M in C5H5N and 0.178 M in C;H5NH pH- Consider how to prepare a buffer solution with pH 3.03 (using one of the weak acid/conjugate base systems shown here) by combining 1.00 L of a 0.370-M solution of weak...
calculate the molar solubility of Cr(OH)3 in a
solution with a pH of 11.5 knowing that Ksp(Cr(OH)3) = 6.7 x
10^(-31)
1. Calculate the molar solubility of Cr(OH), in a solution with a pH of 11.5 knowing that Kop(Cr(OH)2) = 6.7 x 10" 2. What is the pH of a 0.895M sodium fluoride (NaF) solution knowing that the hydrofluoric acid is 7.11 x 10 of 3. Calculate the molar solubility of antimony sulfide (Sb2S) in water knowing K =1.6 x...
Question two
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,O2. The initial concentration of both the acid and the base are 0.0100 mol/0.1000...
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