You add 147.25g of potassium acetate (KCH3COO, MW 98.15 g/lol) to 250mL of distilled water. You adjust the pH to 5.5 with a volume of glacial acetic acid (17.4M, CH3COOH, pKa=4.75) and qs the remaining volume to 500mL with distilled water. How much glacial acetic acid did you have to add to make 500mL of a pH 5.5 buffer?
Answer:-
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You add 147.25g of potassium acetate (KCH3COO, MW 98.15 g/lol) to 250mL of distilled water. You...
You
have prepared 250mL of a 0.200M acetate buffer solution with a pH
of 4.53.
b. If you made the solution above using solid sodium acetate (MW 136 g/mol) and liquid acetic acid (17.6 M, referred to as glacial acetic acid), what mass of sodium acetate is required and what volume of glacial acetic acid is required? Show all your calculations. mass of sodium acetate volume of glacial acetic acid
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Given 1 M solutions of acetic acid and sodium acetate, and distilled water, describe the preparation of 1 L of 0.1 M acetate buffer at pH = 5.4. The relevant pKa is 4.76.
12. You are asked to prepare 500. mL of a 0.200 M acetate buffer at pH 4.90 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the following questions regarding the preparation of the buffer. a) How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. g=? B) What volume of 3.00 M...
You are asked to prepare 500 ml of a 0 250 M acetate Puffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76). 3 00 M NaOH, water. Answer the following questions regarding the preparation of the buffer. How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. What volume of 3.00...
can you please write the calculations with clear
writing and explanations and thank you
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Suppose you want to make an acetic acid/acetate buffer to a pH of 5.00 using 10.0 mL of 1.00 M acetic acid solution. How many milliliters of 1.00 M sodium acetate solution would you need to add? The pKa for acetate buffer is 4.75.
Given 1 M solutions of acetic acid and sodium acetate, and distilled water, describe the preparation of 1 L of 0.1 M acetate buffer at pH = 5.4. The relevant pKa is 4.76. I know how to solve this problem but i'm having a hard time converting the moles to liters (like the correct set up too use)
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