6+ (20 pts.) You prepare a buffer by ading 0.I mol of Na,PO, and 0.15 mol...

Question

Question

Answer 1

Answer #1

O l 0 I5 2 20 다mTJ 1 Or 2orKS χ = 20.045 volume of KOH = moles/ molarity = 0.01 mole/ 0.5 M = .02 L = 20 ml

Answer 2

Similar Homework Help Questions

Phosphoric acid is a triprotic acid with the pK, values PK i = 2.148, PK 2...

Phosphoric acid is a triprotic acid with the pK, values PK i = 2.148, PK 2 = 7.198, and pK23 = 12.375. You wish to prepare 1.000 L of a 0.0500 M phosphate buffer at pH 7.620. To do this, you choose to mix the two salt forms involved in the second ionization, NaH, PO, and Na, HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the...
pling Learning illan learning Phosphoric acid is a triprotic acid with the following pKa values: pKal...

pling Learning illan learning Phosphoric acid is a triprotic acid with the following pKa values: pKal = 2.148 pKa,-7.198 pKa3-12.375 You wish to prepare 1.000 L of a 0.0200 M phosphate buffer at pH 7.720. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO, and Na2HPO4, in a 1.000 L mass of each salt will you add to the mixture? Number Number mass NaH,PO,-0 mass Na, HPO
Phosphoric acid is a triprotic acid with the pK, values pK 1 = 2.148, PK 2...

Phosphoric acid is a triprotic acid with the pK, values pK 1 = 2.148, PK 2 = 7.198, and pk 3 = 12.375. You wish to prepare 1.000 L of a 0.0100 M phosphate buffer at pH 7.720. To do this, you choose to mix the two salt forms involved in the second ionization, NaH,PO, and Na, HPO,, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the...

Phosphoric acid is a triprotic acid with the pK values pK = 2.148, pK2 = 7.198,...

Phosphoric acid is a triprotic acid with the pK values pK = 2.148, pK2 = 7.198, and pK3 12.375. You wish to prepare 1.000 L of a 0.0300 M phosphate buffer at pH 7.400. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2 POą and Na, HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? mass NaH,...
Phosphoric acid is a triprotic acid with the pk, values pha=2.148, p 2 7.198, and pks...

Phosphoric acid is a triprotic acid with the pk, values pha=2.148, p 2 7.198, and pks = 12.375. You wish to prepare 1.000 L of a 0.0600 M phosphate buffer at pH 7.780. To do this, you choose to mix the two salt forms involved in the second ionization. Nah,PO, and Na,HPO,, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? mass NaH,PO, 1.87 mass Na,...
Phosphoric acid is a triprotic acid with the pk, values Kal = 2.148, p 2 =...

Phosphoric acid is a triprotic acid with the pk, values Kal = 2.148, p 2 = 7.198, and pka3 = 12.375. You wish to prepare 1.000 L of a 0.0200 M phosphate buffer at pH 7.440. To do this, you choose to mix the two salt forms involved in the second ionization, NaH, PO, and Na,HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? mass...

A buffer is prepared by adding 0.15 mol of lactic acid, CH3CHOHCOOH, and 0.20 mol of...

A buffer is prepared by adding 0.15 mol of lactic acid, CH3CHOHCOOH, and 0.20 mol of sodium lactate, Na+CH3CHOHCOO - , to sufficient water to make 1.0 L of buffer solution. The Ka of lactic acid is 1.4 x 10 - 4. Calculate the pH of the buffer.
Phosphoric acid is a triprotic acid with the p K a values p K a 1...

Phosphoric acid is a triprotic acid with the p K a values p K a 1 = 2.148 , p K a 2 = 7.198 , and p K a 3 = 12.375 . You wish to prepare 1.000 L of a 0.0500 M phosphate buffer at pH 7.740 . To do this, you choose to mix the two salt forms involved in the second ionization, NaH 2 PO 4 and Na 2 HPO 4 , in a 1.000 L...
2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity to be higher, lower, or the same as the buffer you prepared in Part II of this lab? Be specific and use your data. c. Measure the pH of the Beaker #2 solution, via a pH meter, and record in data sheet. Part II: Dilute Buffer Solution In this section, the pH of a 0.25 M CH3CO2H - 0.25...

You need to prepare an acetate buffer of pH 6.25 from a 0.896 M acetic acid...

You need to prepare an acetate buffer of pH 6.25 from a 0.896 M acetic acid solution and a 2.46 M KOH solution. If you have 680 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 6.25? The pK, of acetic acid is 4.76. ml