VI.2. Questions 92. How to make 0,15 M acetic acid solution from absolute acetic acid. 93....
Can you please answer this questions? thanks! VI.2. Questions 92. How to make 0,15 M acetic acid solution from absolute acetic acid. 93. How to make a solution of 0,12 M; 0,09 M; 0,06 M; 0,03 M; 0,015 M from 0.15 M acetic acid with a volume of 100 ml in each. 94. Write down the pH formula for a mixture of weak acid with strong base. 95. Why do we choose a solution of NaOH to titrate filtrate solution...
help find the answers for this questions please! thankyou VI.2. Questions 92. How to make 0,15 M acetic acid solution from absolute acetic acid. 93. How to make a solution of 0,12 M; 0,09 M; 0,06 M; 0,03 M; 0,015 M from 0.15 M acetic acid with a volume of 100 ml in each. 94. Write down the pH formula for a mixture of weak acid with strong base. 95. Why do we choose a solution of NaOH to titrate...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution that was used to titrate 1.2 g of potassium acid phthalate if 37.50 ml of the base were reauired to get to the end point of the titration. 2 It takes 12.45 ml. of a 0.500 M NaOH solution larity of the acid to titrate 30.0 mL of acetic acid. What is the mo- 3. Using the titration curve below, calculate the K, of...
1. Without doing any math, which solution has a lower pH: (a) 0.05 M acetic acid, or (b) a buffer prepared from 0.05 acetic acid and 0.05 M sodium acetate. Explain your answer. 2. Without doing any math, which solution has a lower pH: (a) 0.05 M acetic acid that has been titrated to its endpoint using NaOH, or (b) a buffer prepared from 0.05 acetic acid and 0.05 M sodium acetate. Explain your answer. 3. What pH did you...
What is the initial pH expected for a 0.1 M solution of phosphoric acid (H3PO4)? For 30.0 mL of 0.1 M H3PO4 (aq), what volume of 0.1 M NaOH (aq) is required to fully titrate all three protons to their end points? In the titration of a weak acid with a strong base, how is the half equivalence point determined and what is its significance? How are the pKa and Ka of the weak acid determined from the half equivalence...
1. Which of the following make a buffer solution? (circle all the correct answers) a. 0.1 M HCl and 0.1 M NaCl b. 0.1 M HF and 0.075 M KF C. 0.15 M Pentanoic acid and 0.15 M sodium pentanoate d. 0.1 M NaOH and 0.1 M HCI e. 0.1 M acetic acid and 0.00001 sodium acetate 2. Which of the following could make buffer systems when mixed together? (circle the correct answers) a. 0.10 M acetic acid and 0.05...
1. A 0.100 M solution of the weak acid HB has a pH of 3.00. What are the [H+], [B-], and Ka for this acid? 2. A solid acid is dissolved in water. Half the solution is titrated to a phenolphthalein end point with NaOH solution. The neutralized and acid solutions are then mixed and the pH of the resulting solution is found to be 4.60. Find Ka of the solid acid. 3. Assuming your buffered solution contains acetic acid,...
Weak-Acid Strong-Base Titrations. These next questions relate to a 25 mL aliquot of 0.35 M acetic acid (Ka = 1.77 x 10) that is titrated with 0.20 M potassium hydroxide (KOH). (f) What is the pH of the acetic acid solution before the titration begins? (g) What is the pH after 14 mL of 0.20 M KOH has been added to the solution? Use the Henderson-Hasselbalch equation. (h) What is the pH at the equivalence point?
Solutions available 1.Acetic acid (CHCOH, K = 1.8 10) and sodium acetate (NaCHO). 2.Ammonium chloride (NHCl, K for NH = 5.6 10) and ammonia (NH). (The buffer will be prepared by choosing the appropriate acid-base pair, calculating the molar ratio of acid to base that will produce the assigned pH, and then mixing the calculated amounts of the two compounds with enough deionized water to make 200. mL of buffer solution. A solution with approximately the same pH as...
I need help with questions 1,3,4,5 1.0.15 M ammonium chloride is added to a 0.05 M solution of ammonia. How does the pH change? NHs(aq) + H2O(1) NH(aq) + OH(aq) A. pH goes up B. pH goes down C. pH does not change 2. Which of the following would make buffer system? A. a weak asid and NaCl B. a weak acident's conjugate base C. a strong acid and a weak acid D. alveak acid and a strong acid E....