Question

A solution contains 0.03 M phenobarbital and 0.02 M sodium phenobarbital. Calculate the pH of this...

A solution contains 0.03 M phenobarbital and 0.02 M sodium phenobarbital. Calculate the pH of this buffer solution. The pKa for phenobarbital is 7.4. What is the percent of phenobarbital (in the free acid form) in the solution? Ans: 60.2%           

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a) A solution contains 0.500 M ammonium iodide and 0.413 M ammonia.   The pH of this...
a) A solution contains 0.500 M ammonium iodide and 0.413 M ammonia.   The pH of this solution is . b) A buffer solution contains 0.280 M KHCO3 and 0.469 M K2CO3. If 0.0252 moles of perchloric acid are added to 150 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon adding perchloric acid) pH = c) A buffer solution contains 0.327 M hypochlorous acid and 0.441 M...
A buffer solution contains 0.341 M nitrous acid and 0.303 M sodium nitrite. If 0.0573 moles...
A buffer solution contains 0.341 M nitrous acid and 0.303 M sodium nitrite. If 0.0573 moles of nitric acid are added to 250 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding nitric acid) pH =
A 1.936 L buffer solution is 0.581 M in acetic acid and 0.581 M in sodium...
A 1.936 L buffer solution is 0.581 M in acetic acid and 0.581 M in sodium acetate. Acetic acid has a pKa of 4.74, making the pH of this solution 4.74. What is the pH after addition of 0.083 mol of HCl?
A buffer with a pH of 3.90 contains 0.15 M of sodium benzoate and 0.30 M...
A buffer with a pH of 3.90 contains 0.15 M of sodium benzoate and 0.30 M of benzoic acid. What is the concentration of [H ] in the solution after the addition of 0.056 mol of HCl to a final volume of 1.4 L? Assume that any contribution of HCl to the volume is negligible. WHAT IS CONCENTRATION OF HCL ADDED TO BUFFER??
A buffer with a pH of 4.24 contains 0.39 M of sodium benzoate and 0.36 M...
A buffer with a pH of 4.24 contains 0.39 M of sodium benzoate and 0.36 M of benzoic acid. What is the concentration of [H ] in the solution after the addition of 0.050 mol of HCl to a final volume of 1.4 L? Assume that any contribution of HCl to the volume is negligible.
buffer with a pH of 4.14 contains 0.35 M of sodium benzoate and 0.40 M of...
buffer with a pH of 4.14 contains 0.35 M of sodium benzoate and 0.40 M of benzoic acid. What is the concentration of [H+] in the solution after the addition of 0.054 mol of HCl to a final volume of 1.6 L? Assume that any contribution of HCl to the volume is negligible.
A solution contains 9.02×10-2 M sodium hypochlorite and 0.328 M hypochlorous acid. The pH of this...
A solution contains 9.02×10-2 M sodium hypochlorite and 0.328 M hypochlorous acid. The pH of this solution is
PART A A buffer solution contains 0.358 M ammonium chloride and 0.499 M ammonia. If 0.0274...
PART A A buffer solution contains 0.358 M ammonium chloride and 0.499 M ammonia. If 0.0274 moles of perchloric acid are added to 125 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon adding perchloric acid) pH = _______ PART B A buffer solution contains 0.328 M nitrous acid and 0.481 M sodium nitrite. If 0.0248 moles of hydrochloric acid are added to 125 mL of this...
A) Calculate the pH of a solution that is 0.270 M in sodium formate (HCOONa) and...
A) Calculate the pH of a solution that is 0.270 M in sodium formate (HCOONa) and 0.130 M in formic acid (HCOOH). Express your answer to two decimal places. B) Calculate the pH of a solution that is 0.510 M in pyridine (C5H5N) and 0.470 M in pyridinium chloride (C5H5NHCl). Express your answer to two decimal places. C) Calculate the pH of a solution that is made by combining 55 mL of 0.060 M hydrofluoric acid with 125 mLof 0.110...
A buffer solution (pH 4.74) contains acetic acid (0.05 mol/L) and sodium acetate (0.05 mol/L) i.e....
A buffer solution (pH 4.74) contains acetic acid (0.05 mol/L) and sodium acetate (0.05 mol/L) i.e. it is a 0.1M acetate buffer. Calculate the pH after addition of 2 mL of 0.025M hydrochloric acid to 10 mL of the buffer.​
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT