What is the pH of 1.0 mol of acetic acid (pKa = 4.76) in the presence of 0.3 mol of NaOH? Is this in the buffering region based on the titration curve?
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What is the pH of 1.0 mol of acetic acid (pKa = 4.76) in the presence...
What is the pH of a buffer prepared by adding 6.0 mol of acetic acid and 1 mol of NaOH to water to make a 1.0-L solution? Ka for acetic acid is 1.75*10-5 and its pKa is 4.76.
A buffer contains 0.025 mol of acetic acid (pKa = 4.76) and 0.100 mol of sodium acetate per liter. What is the pH, when 150 mL of 0.1M HCl is added to 1.0 L of the buffer. A. 5.09 CORRECT ANSWER B. 5.17 C. 4.76 D. 6.32 E. 2.18 Please show how A. is the correct answer
46. The pka for acetic acid is 4.76. What is the pH of a 0.04 M solution? (1) (3) 3.03 12.1 5.88 1.40 3.08 (5)
What concentrations of acetic acid (pKa=4.76)(pKa=4.76) and acetate would be required to prepare a 0.10 M0.10 M buffer solution at pH 4.6pH 4.6? Note that the concentration, pH value, or both may differ from that in the first question. Strategy Rearrange the Henderson–Hasselbalch equation to solve for the ratio of base (acetate) to acid (acetic acid), [A−]/[HA][A−]/[HA] . Use the mole fraction of acetate to calculate the concentration of acetate. Calculate the concentration of acetic acid. Step 1: The ratio...
30.0mL of 300mM Acetic acid (pKa= 4.76) is mixed with 15.0mL of 210 mM NaOH. What is the pH of the final solution we'll call SOLUTION A? If 10mL of 0.200M HCl is added to SOLUTION A, what would be the new pH?
1) An acetic acid aqueous solution has a pKa of 4.76 and pH of 3.00. What is the concentration of acetic acid? 2) An experiment requires you to culture mammalian cells in 10 mL of culture medium buffered to a pH of 7.4 with 25 mM HEPES. After the experiment, the pH dropped to 7.0. How many equivalents of acid must have been produced by the cells to have dropped the pH?
4. How much of (in mL) 0.15 M acetic acid (pKa 4.76) is needed to mix with 40 mL of 0.15 M sodium acetate to make a buffer of pH = 4.50 of 250 mL? (molar mass of acetic acid and sodium acetate are 60.0 g/mol and 82.0 g/ml, pKa of acetic acid is 4.76) (extra 10 pt)
1,2,and 3 please!!
Post-Lab Questions 1. The pKa value for the carboxylic structure of acetic acid at (a) pH- 1, (b) pH-7, and (c) p-13 acid group in acetic acid is 4.75. Write the predominant 2. Fill in the following table to show the theoretical results for the titration of 1.0 L of 0.20 M acetic acid by adding the designated amount of solid (no volume change) potassium hydroxide, KOH. Show a sample calculation of your work below. pH IH'T...
3. a. What concentration of acetic acid will have a pH of 2.50? pKa = 4.76 b. What concentration of oxalic acid, shown below, will have a pH of 2.50? pKa1 = 1.25, pKa2 = 4.14 c. One way oxalic acid can be produced in fungi is by hydrolysis of oxaloacetate, an intermediate in the Kreb’s citric acid cycle, to produce oxalic acid and acetic acid. This reaction, shown below, is catalyzed by oxaloacetase. [O2CC(O)CH2CO2] 2− + H2O → C2O2−...
Calculate the pH of the following solutions 0.01M ammonium hydroxide; pKb= 4.76 0.01M acetic acid; pKa= 4.76 A 1L solution prepared by mixing 500 ml of 0.02M acetic acid with 500 ml of 0.02M sodium acetate can you solve with explanation please, thanks