Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Chemistry Expert

In my Biochemistry lab this week we made buffer solutions. I had TRIS. I made 100ml of .1M solutions. The original ph was 9.15. I added HCl until ph matched the listed pka of 8.3. weight of TRIS is 1.235g.

(a) what is the ratio of A- / HA in your buffer are present in the solution?

(b) How many micromoles of A- and HA are present in the solution?

(c) If you now add 3ml of 1M NaOH, will you still have a valid buffer? Explain.

Calculate the theoretical ph of one of your buffer at 0^0 C. Assume that room temperature is 22^0 C. If none of your buffer is listed on the table of changing pka with temperature, do this problem for TRIS at ph 8.0.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M9469000

Have any Question?


Related Questions in Chemistry

A 440 g sample of an unknown metal at 990nbspoc was placed

A 44.0 g sample of an unknown metal at 99.0  o C was placed in a constant-pressure calorimeter of negligible heat capacity containing 80.0 mL water at 24.0  o C. The final temperature of the system was found to be 28.4  ...

A watch glass and filter paper weighing 41060g was used to

A watch glass and Filter paper weighing 41.060g was used to collect the CuSCN precipitate in this experiment. After drying, the precipitate, watch glass, and filter paper weighed 42.525g. If the sample alloy used for the ...

How many grams of h2so4 must be dissolved into 0709 l of

How many grams of H2SO4 must be dissolved into 0.709 L of solution to generate a concentration of 0.303 M?

A student takes 50ml of a stock fescn2 solution and dilutes

A student takes 5.0mL of a stock FeSCN2+ solution and dilutes it with deionized water to a volume of 50mL. He then puts the solution in a Spectronic 20 instrument and determines the the % transmittance of the new solutio ...

Why does a hydrate exist only as a solid what

Why does a hydrate exist only as a solid? What characteristic of a hydrate is responsible for this phenomenon?

Determine the kinetic energy of a 750 kg mass moving at 613

Determine the kinetic energy of a 75.0 kg mass moving at 61.3 m/s. Your answer should be in Joules.

While heating your copper sulfur mixture the original

While heating your copper sulfur mixture the original crucible lid fell and was broken. You replace the lid with another one. You used the mass of the original lid in your calculations. However the mass of the second lid ...

What roman numeral is required in the name of the following

What roman numeral is required in the name of the following compound? Ag2SO4 What roman numeral is required in the name of the following compound? CuCO3 What roman numeral is required in the name of the following compoun ...

What is an example of a cell diagram for a voltaic cell how

What is an example of a cell diagram for a voltaic cell? How do I calculate the standard cell potential for the example of the voltaic cell?

A power plant converts the heat energy in coal to

A power plant converts the heat energy in coal to electricity with 35% efficiency. Transmission losses are 10%. A factory then uses that electricity to make hydrogen with 50% efficiency, which is used in a fuel cell to m ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As