Homework Answers
20. If 10 mL of 0.05 M NaOH is added to a 20 mL solution of...
20. If 10 mL of 0.05 M NaOH is added to a 20 mL solution of 0.1 M NaNO2 and 0.1 M HNO2, what will be the pH of the resultant solution? Assume that volumes are additive. Ka for HNO2 = 7.1x10-4. 21. At 25°C, 50.0 mL of 0.50 M NaOH(aq) is added to a 250 mL aqueous solution containing 0.30 M NH3 and 0.36 M NH4Cl. What is the pH of the solution after the addition of the base?...
50.0 mL of 0.10 M HNO2 is being titrated with 0.20 M NaOH. What is the...
50.0 mL of 0.10 M HNO2 is being titrated with 0.20 M NaOH. What is the pH after 25.0 mL NaOH has been added? What is the pH after 35.0 mL NaOH has been added?
1.A 25.00 ml smaple of 0.523 M nitrous acid, HNO2, solution is titrated with a 0.213...
1.A 25.00 ml smaple of 0.523 M nitrous acid, HNO2, solution is titrated with a 0.213 M NaOH. For HNO2, Ka = 4.0 X 10^-4 a) What is the pH before any NaOH is added? b) Write the reaction that takes place as KOH solution is added to the HNO2 solution. c) write the reaction that determines the pH at the equivialnce point. -What is the pH at the equivilance point -what is the pH at the 1/2 equivilance point...
A buffer solution consists of 0.10 M HNO2 and 0.20 M NaNO2. If 0.010 moles of...
A buffer solution consists of 0.10 M HNO2 and 0.20 M NaNO2. If 0.010 moles of sodium hydroxide are added to 200. ml the solution , what is the new pH of the solution (pKa (HNO2) = 3.40)?
7. Calculate the pH of the solution obtained by titrating 50.0 mL of 0.100 M HNO2(aq)...
7. Calculate the pH of the solution obtained by titrating 50.0 mL of 0.100 M HNO2(aq) with 0.150 M NaOH(aq) to the equivalence point. Take Ka = 5.6 x 10 - M for HNO2(aq).
Calculate the pH of the solution obtained by titrating 40 ml of 0.35 M HNO2(aq) with...
Calculate the pH of the solution obtained by titrating 40 ml of 0.35 M HNO2(aq) with 0.4 M NaOH(aq) to the equivalence point. Take Ka= 4.6x10^M.
5. Exactly 100 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. Calculate the pH for [10 pts] the point at which 100 mL of the base has been added. 5. Exactly 100 mL...
5. Exactly 100 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. Calculate the pH for [10 pts] the point at which 100 mL of the base has been added.
5. Exactly 100 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. Calculate the pH for [10 pts] the point at which 100 mL of the base has been added.
A student places 50.0 mL of 0.630 M HNO2 in a 250mL Erlenmeyer flask and adds...
A student places 50.0 mL of 0.630 M HNO2 in a 250mL Erlenmeyer flask and adds indicator. After 35.0 mL of 1.014 M standardized NaOH is added, what is the pH of the solution.
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produ...
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...
An analytical chemist is titrating 91.8 mL of a 0.4200 M solution of nitrous acid (HNO2)...
An analytical chemist is titrating 91.8 mL of a 0.4200 M solution of nitrous acid (HNO2) with a 0.9300 M solution of KOH. The pK, of nitrous acid is 3.35. Calculate the pH of the acid solution after the chemist has added 24.9 mL of the KOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of KOH solution added. Round your answer to 2 decimal...
20. If 10 mL of 0.05 M NaOH is added to a 20 mL solution of 0.1 M NaNO2 and 0.1 M HNO2, what will be the pH of the resultant solution? Assume that volumes are additive. Ka for HNO2 = 7.1x10-4. 21. At 25°C, 50.0 mL of 0.50 M NaOH(aq) is added to a 250 mL aqueous solution containing 0.30 M NH3 and 0.36 M NH4Cl. What is the pH of the solution after the addition of the base?...
7. Calculate the pH of the solution obtained by titrating 50.0 mL of 0.100 M HNO2(aq) with 0.150 M NaOH(aq) to the equivalence point. Take Ka = 5.6 x 10 - M for HNO2(aq).
Calculate the pH of the solution obtained by titrating 40 ml of 0.35 M HNO2(aq) with 0.4 M NaOH(aq) to the equivalence point. Take Ka= 4.6x10^M.
5. Exactly 100 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. Calculate the pH for [10 pts] the point at which 100 mL of the base has been added.
5. Exactly 100 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. Calculate the pH for [10 pts] the point at which 100 mL of the base has been added.
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...
An analytical chemist is titrating 91.8 mL of a 0.4200 M solution of nitrous acid (HNO2) with a 0.9300 M solution of KOH. The pK, of nitrous acid is 3.35. Calculate the pH of the acid solution after the chemist has added 24.9 mL of the KOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of KOH solution added. Round your answer to 2 decimal...
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