The Ka of Tris base is 8.3 x 10-9. What is the pKa? How would you...

The Ka of Tris base is 8.3 x 10^-9. What is the pKa?

How would you prepare 100mL of 50mM Tris buffer at pH 7.2, starting with 1M stock solutions of Tris base and Tris-HCl?

Expert Solution

queen_honey_blossom answered 2 years ago

One liter of a 0.1M Tris buffer (pKa=8.3) is adjusted to a pH of 2.0. A)...

One liter of a 0.1M Tris buffer (pKa=8.3) is adjusted to a pH of 2.0. A) What are the concentrations of the conjugate base and weak acid at this pH? B) What is the pH when 1.5mL of 3.0M HCl is added to this buffer? Is Tris a good buffer at this pH? Why? C) What is the pH when 1.5mL of 3.0M NaOH is added to this buffer?

The Henderson-Hasselbalch equation for a solution of Tris {NH2C(CH2OH)3}, pKa= 8.3 calculate the quotient [A-]/[HA] at...

The Henderson-Hasselbalch equation for a solution of Tris {NH2C(CH2OH)3}, pKa= 8.3 calculate the quotient [A-]/[HA] at a) pH 7.3 b) pH 9.3

A) HOBr has a Ka = 2.5 x 10-9. What is the pH of a 1.44M...

A) HOBr has a Ka = 2.5 x 10-9. What is the pH of a 1.44M solution of HOBr? B) What is the % dissociation of a 1.4M acetic acid solution? Ka = 1.8 x 10-5

a. The ka of acetic acid is 1.8*10^-5. What is the pka of the acetic acid?...

a. The ka of acetic acid is 1.8*10^-5. What is the pka of the acetic acid? b.What should be the ph of a solution of 1.0 mL of 0.1 M acetic acid and 1.0 mL of 0.1 M sodium acetate and 48.0 mL H2O? c.What should be the ph of a solution of 5.0 ml of 0.1 M acetic acid and 5.0ml of 0.1M sodium acetate and 40.0ml h20? is the answer 4.74 for all parts ?? thanks

You need to prepare a buffer with the following concentrations: 0.2 M Tris (FW Tris Base...

You need to prepare a buffer with the following concentrations: 0.2 M Tris (FW Tris Base = 121.1), 0.2 M NaCl (FW NaCl = 58.44), 0.01 M MgAc (FW MgAc = 214.4) and 5% glycerol. Prepare a table that shows how to prepare 1 L of this solution.

An acid with a Ka= 0.000343, is titrated with a strong base, what would the pH...

An acid with a Ka= 0.000343, is titrated with a strong base, what would the pH be after half the volume of base needed to reach the equivalenc point has been added?

Acetic acid is a monoprotic weak acid with a pKa of 4.74. (Ka = 1.8 x...

Acetic acid is a monoprotic weak acid with a pKa of 4.74. (Ka = 1.8 x 10-5) (a) What is the pH of 5 mL of a 5.0% solution? (b) What is the pH of the solution if you now add 45 ml of water to solution (a)? How will the equivalence point volumes differ if you titrate the two solutions ?

How many grams of Tris base (Trizma base) and sodium chloride are weighed out to make...

How many grams of Tris base (Trizma base) and sodium chloride are weighed out to make one liter of 10x Tris-buffered saline, pH 7.4 (TBS) which contains 100mM Tris base and 1.5 M NaCl?

Weak Acid Ka Weak Base Kb CH3COOH (Acetic Acid) 1.8 X 10-5 NH3 (Ammonia) 1.76 X...

Weak Acid Ka Weak Base Kb CH3COOH (Acetic Acid) 1.8 X 10-5 NH3 (Ammonia) 1.76 X 10-5 C6H5COOH (Benzoic Acid) 6.5 X 10-5 C6H5NH2 (Aniline) 3.9 X 10-10 CH3CH2CH2COOH (Butanoic Acid) 1.5 X 10-5 (CH3CH2)2NH (Diethyl amine) 6.9 X 10-4 HCOOH (Formic Acid) 1.8 X 10-4 C5H5N (Pyridine) 1.7 X 10-9 HBrO (Hypobromous Acid) 2.8 X 10-9 CH3CH2NH2 (Ethyl amine) 5.6 X 10-4 HNO2 (Nitrous Acid) 4.6 X 10-4 (CH3)3N (Trimethyl amine) 6.4 X 10-5 HClO (Hypochlorous Acid) 2.9 X...

Salt Hydrolysis Lab Suggest how various experimental errors would affect your calculated values of Pka, Ka,...

Salt Hydrolysis Lab Suggest how various experimental errors would affect your calculated values of Pka, Ka, and or molarity. Clearly explain whether the calculated value would be higher, lower, or no different than the actual value. Possible experimental errors may include: a) The pH buffers used to calibrate the PH meters were 4.5 and 7.5, whereas you thought they were 4.0 and 7.0 and calibrated the pH meters accordingly. b) You decided to take the pH after each addition of...

Question