Starting from 0.5 M formic acid and solid sodium formate. Describe how to prepare 5 L of Formate buffer, pH = 4, Ka =1....

Question

Question

Starting from 0.5 M formic acid and solid sodium formate. Describe how to prepare 5 L of Formate buffer, pH = 4, Ka =1.78×10-4

Answer 1

Answer #1

Sol Given (Acid) it cool] = .gm Volume - 5 moles als hcoolt = o.smx SL = 2.5 mol & also given: Kas 1.78x10 - plea_ -lagta-4-d

Answer 2

Similar Homework Help Questions

Calculate how to prepare 750 ml of 0.25 M sodium formate buffer at pH 4. Use...

Calculate how to prepare 750 ml of 0.25 M sodium formate buffer at pH 4. Use your textbook to determine the molecular weight and pKa of the acid and base. Calculate the grams of sodium formate and number of milliliters of formic acid required. THEN using this stock solution, calculate and describe how you would prepare 100 ml of a 10 mM formate buffer, pH 3.5. By the way, what is the molarity of formic acid? with pH 7.6 and...
Describe the preparation of 2 liters of 0.25 formate buffer, pH 4.5, starting with 1M formic...

Describe the preparation of 2 liters of 0.25 formate buffer, pH 4.5, starting with 1M formic acid and solid sodium formate (HCOONa). pKa of HCOOH, formic acid is 3.75
a buffer solution with ph of 4.63 is prepared with 0.14m formic acid and ___m sodium...

a buffer solution with ph of 4.63 is prepared with 0.14m formic acid and ___m sodium formate. The ka of formic acid is 1.8*10^-4.

Suppose you want to prepare a buffer with a pH of 4.35 using formic acid. What...

Suppose you want to prepare a buffer with a pH of 4.35 using formic acid. What ratio of [sodium formate]/[formic acid] do you need to make this buffer? Formic acid has a Ka of 1.8x10-4. Show work please.
4. Formic acid, HFor, has a Ka value of 1.8 × 10 -4 . A student...

4. Formic acid, HFor, has a Ka value of 1.8 × 10 -4 . A student is asked to prepare a buffer having a pH of 3.40 from a solution of formic acid and a solution of sodium formate having the same molarity. How many milliliters of the NaFor solution should she add to 20 mL of the HFor solution to make the buffer? 5. How many mL of 0.10 M NaOH should the student add to 20 mL 0.10...
You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The...

You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4 what is the pH of the solution? With the same initial solution of 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4. You add 8g sodium hydroxide to this solution, what is the new pH? With the same initial solution of 0.75 moles formate and 0.85 moles...

Calculate the pH of a buffer solution that is 0.30 M formic acid (HCO2H) and 0.50...

Calculate the pH of a buffer solution that is 0.30 M formic acid (HCO2H) and 0.50 M sodium formate (HCO2Na). Ka of HCO2H is 1.8 x 10-4
Calculate the mass of solid formic acid (MM = 46.0 g/mol - Ka = 1.8 x...

Calculate the mass of solid formic acid (MM = 46.0 g/mol - Ka = 1.8 x 10-4 ) and sodium formate (MM = 68 g/mol) needed to make 100 mL a 0.2 M formic acid buffer that is 1:3 (conjugate base/weak acid). Also predict the pH of this buffer.
What mass of sodium formate must be added to 550.0 mL of 1.30 M formic acid...

What mass of sodium formate must be added to 550.0 mL of 1.30 M formic acid to produce a buffer solution that has a pH of 3.40 (Ka [HCOOH]) =1.80 x 10 ^-4)?

QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a...

QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a pH = 4.00, what ratio of formic acid to sodium formate is required? (Notice that I am asking for the ratio of acid to base, not base to acid!) a) 1.25 b) 0.56 c) 0.82 d) 1.87 QUESTION 4 If you find that you need an acid to base ratio of 4.23 and you are using 50.00mL of a 1.00M acid solution, what volume...