Homework Answers
HNO2(nitrous acid) is a weak acid and KOH is a strong base , so when weak acid and strong base are titrated there forms a basic salt at equivalence point and hence solution is slightly basic as equivalence point.
And base have pH > 7 .
Moles of acid and base are always equal at equivalence point.
Hence option (c) pH will be greater than 7 at equivalence point , is the correct answer .
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When titrating HNO2 with KOH at 25°C, the OpH will be less than 7 at the...
Question 35 When titrating a weak monoprotic acid with NaOH at 25°C, the A) titration will...
Question 35 When titrating a weak monoprotic acid with NaOH at 25°C, the A) titration will require more moles of acid than base to reach the equivalence point. B) pH will be less than 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) titration will require more moles of base than acid to reach the equivalence point. E) pH will be equal to 7 at the equivalence point. Question 36
1. When titrating of an acid of HF and Ca(OH) 2 , the PH at equivalent...
1. When titrating of an acid of HF and Ca(OH) 2 , the PH at equivalent point: A. pH will be less than 7 at the equivalence point. B. pH will be greater than 7 at the equivalence point. C. titration will require more moles of base than acid to reach the equivalence point. D. pH will be equal to 7 at the equivalence point. E. titration will require more moles of acid than base to reach the equivalence point....
1. A solution is prepared by dissolving 0.23 mol of butanoic acid and 0.27 mol of...
1. A solution is prepared by dissolving 0.23 mol of butanoic acid and 0.27 mol of sodium butanoate in water sufficient to yield 1.00 L of solution. The addition of 0.0O5 mol of HCI to this buffer solution causes the plH to drop slightly. The pH does not decrease drastically because the HCl reacts with the present in the buffer solution. The Ka of butanoic acid is 1.36x 10-3 A) H20 в) Нзо+ butanoate ion D butanoic acid AlE) This...
A pH of less than 7 can be realized at the equivalence point during the titration,...
A pH of less than 7 can be realized at the equivalence point during the titration, at 25 oC, of: a) strong acid-strong base titration b) weak acid- strong base c) weak base-strong acid d) none of these
The following 8 questions are related to the titration of 153.0 mL of 0.276 M A...
The following 8 questions are related to the titration of 153.0 mL of 0.276 M A with 0.698M HCI at 25°C. (K, of A = 2.18E-4, A is a monoprotic base) 1. What would you estimate the initial pH of A to be prior to the addition of any acid? Choose one. A) pH = 7 B) pH is less than 7 C) pH is greater than 7 2. What is the pH after the addition of 15.3 mL of...
A student performs a titration, titrating 25.00 mL of a weak monoprotic acid, HNO2, with a...
A student performs a titration, titrating 25.00 mL of a weak monoprotic acid, HNO2, with a 1.821 M solution of NaOH. They collect data, plot a titration curve and determine that the equivalence point was reached after the addition of 24.64 mL of the base. What is concentration of NO2 at equivalence point (in M)? (give your answer to three decimal places)
Calculate pH during acid base titration Question When titrating a strong acid with a strong base,...
Calculate pH during acid base titration Question When titrating a strong acid with a strong base, after the equivalence point is reached, the pH will be determined exclusively by: Select the correct answer below: O hydronium concentration O hydroxide concentration O conjugate base concentration O conjugate acid concentration FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
Suppose you are titrating a 25.0 mL aqueous solution of HNO2 (Ka = 4.6 × 10−4)...
Suppose you are titrating a 25.0 mL aqueous solution of HNO2 (Ka = 4.6 × 10−4) with 0.150 M NaOH at 25 °C. You find that 23.5 mL of NaOH are required to reach the equivalence point. Please determine the pH at the equivalence point.
a) A 41.0 mL sample of 0.194 M HNO2 is titrated with 0.220 M KOH. (Ka...
a) A 41.0 mL sample of 0.194 M HNO2 is titrated with 0.220 M KOH. (Ka for HNO2 is 4.57×10−4.) Determine the pH at the equivalence point for the titration of HNO2 and KOH. b) A 50.0-mL sample of 0.200 M sodium hydroxide is titrated with 0.200 M nitric acid. Calculate the pH of the solution, after you add a total of 56.7 mL 0.200 M HNO3.
Show calculations please. Thank you! 17. The acid/base titration curve below has been obtained by titrating...
Show calculations please. Thank you!
17. The acid/base titration curve below has been obtained by titrating 0.10 moles of a weak acid of acidity constant Ka=8.0x10-5 in 100.0 mL of water with a strong base (NaOH). 8pts 0 moles NaOHH Answer the following questions (neglect dilution): (a) The equivalence point C has been reached after adding moles of NaOH. (b) Compute the pH at the start of the titration (point A): (c) Compute the pH at the midpoint of the...
Question 35 When titrating a weak monoprotic acid with NaOH at 25°C, the A) titration will require more moles of acid than base to reach the equivalence point. B) pH will be less than 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) titration will require more moles of base than acid to reach the equivalence point. E) pH will be equal to 7 at the equivalence point. Question 36
1. A solution is prepared by dissolving 0.23 mol of butanoic acid and 0.27 mol of sodium butanoate in water sufficient to yield 1.00 L of solution. The addition of 0.0O5 mol of HCI to this buffer solution causes the plH to drop slightly. The pH does not decrease drastically because the HCl reacts with the present in the buffer solution. The Ka of butanoic acid is 1.36x 10-3 A) H20 в) Нзо+ butanoate ion D butanoic acid AlE) This...
The following 8 questions are related to the titration of 153.0 mL of 0.276 M A with 0.698M HCI at 25°C. (K, of A = 2.18E-4, A is a monoprotic base) 1. What would you estimate the initial pH of A to be prior to the addition of any acid? Choose one. A) pH = 7 B) pH is less than 7 C) pH is greater than 7 2. What is the pH after the addition of 15.3 mL of...
A student performs a titration, titrating 25.00 mL of a weak monoprotic acid, HNO2, with a 1.821 M solution of NaOH. They collect data, plot a titration curve and determine that the equivalence point was reached after the addition of 24.64 mL of the base. What is concentration of NO2 at equivalence point (in M)? (give your answer to three decimal places)
Calculate pH during acid base titration Question When titrating a strong acid with a strong base, after the equivalence point is reached, the pH will be determined exclusively by: Select the correct answer below: O hydronium concentration O hydroxide concentration O conjugate base concentration O conjugate acid concentration FEEDBACK MORE INSTRUCTION SUBMIT Content attribution
Show calculations please. Thank you!
17. The acid/base titration curve below has been obtained by titrating 0.10 moles of a weak acid of acidity constant Ka=8.0x10-5 in 100.0 mL of water with a strong base (NaOH). 8pts 0 moles NaOHH Answer the following questions (neglect dilution): (a) The equivalence point C has been reached after adding moles of NaOH. (b) Compute the pH at the start of the titration (point A): (c) Compute the pH at the midpoint of the...
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