HomeworkLib
Question

To make a buffer, a student mixes H2CO3 with NaHCO3 to form a solution which is 0.012 M carbonic acid (H2CO3) and 0.012...

To make a buffer, a student mixes H2CO3 with NaHCO3 to form a solution which is 0.012 M carbonic acid (H2CO3) and 0.012 M (NaHCO3). The pH of the buffer solution is 6.37

The student adds 10.0 mL of 0.100 M NaOH to a fresh solution of his buffer. Calculate the pH after the addition of NaOH.
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

We know, Moles = Molarity (M)x Volume (V in L) Molarity of H2CO3= 0.012 M So Moles H2CO3 = 0.012 * 1.00 mol Molarity of HCO3

OH- addition to buffer : When OH- is added to the buffer, it reacts with acid H2CO3 and produce HCO3-. So during the addition

0 0
Add a comment
Know the answer?
Add Answer to:
To make a buffer, a student mixes H2CO3 with NaHCO3 to form a solution which is 0.012 M carbonic acid (H2CO3) and 0.012...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Help calculating part B please! Given that carbonic acid, H2CO3, has a pkai = 6.37 and...

    Help calculating part B please! Given that carbonic acid, H2CO3, has a pkai = 6.37 and a pka2 = 10.33, answer the following. (a) If you wanted to make a pH 7 buffer solution starting with NaHCO3(aq), would you add 0.10 M HCl or 0.10 M NaOH? 0.10 M HCI O 0.10 M NaOH (b) If you began with 5.0 mL of 0.42 M NaHCO3, how many mL of your choice from (a) would you need to add to get...

  • A buffer solution based upon carbonic acid (H2CO3) was created by treating 1.00 L of a...

    A buffer solution based upon carbonic acid (H2CO3) was created by treating 1.00 L of a 1.00 M carbonic acid solution with NaOH until a pH of 5.708 was achieved (assuming no volume change). To this buffer 1.170 moles of NaOH were added (assume no volume change). What is the final pH of this solution?

  • What is the pH of a 0.10 M solution of carbonic acid? Carbonic acid, H2CO3 has...

    What is the pH of a 0.10 M solution of carbonic acid? Carbonic acid, H2CO3 has two acidic protons: H2CO3 + H2O7 HCO3 + H30+ Ka1 = 4.3x10-7 HCO3 + H202 CO32- + H30+ Ka2 = 5.6x10-11 a) 1.00 b) 0.70 c) 6.37 d) 3.68 e) I still can't figure this out...

  • A chemist titrates 160.0 mL of a 0.3337 M carbonic acid (H2CO3) solution with 0.4095 M...

    A chemist titrates 160.0 mL of a 0.3337 M carbonic acid (H2CO3) solution with 0.4095 M NaOH solution at 25 °C. Calculate the pH at equivalence. The pK, of carbonic acid is 3.60. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NaOH solution added.

  • 3. You are asked to make a buffer solution with a pH of 3.40 by using...

    3. You are asked to make a buffer solution with a pH of 3.40 by using 0.100 M HNO, and 0.100 M NaOH (aq). a. Explain why the addition of 0.100 M HNO2 to 0.100 M NaOH(aq) can result in the formation of a buffer solution. Include the net ionic equations for the reaction that occurs when you combine HNO2 (aq) and NaOH(aq). Determine the volume, in ml, of 0.100 NaOH(aq) the student should add to 100 mL of 0.100...

  • A student must make a buffer solution with a pH of 2.00. Determine which weak acid...

    A student must make a buffer solution with a pH of 2.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K = 1.34 x 10-6, 3.00 M O sodium bisulfate monohydrate, K = 1.20 x 10,3.00 M acetic acid, K, = 1.75 x 10-6, 5.00 M formic acid, K, = 1.77 x 10 , 2.00 M Determine which conjugate base is the best option to make a buffer at...

  • The following questions is based on ionization of carbonic acid. [H2CO3 = H+ + HCO3- K1 = 4.7 X 10-7, pK1 = 6.34 ] [HCO3- = H+ CO3-2 K2 = 4.4 X 10-11, pK2 = 10.36] Calculate the pH ofthe solution form...

    The following questions is based on ionization of carbonic acid. [H2CO3 = H+ + HCO3- K1 = 4.7 X 10-7, pK1 = 6.34 ] [HCO3- = H+ CO3-2 K2 = 4.4 X 10-11, pK2 = 10.36] Calculate the pH ofthe solution form by mixing the following: a)50.0ml of 0.100 M H2CO3 with 50.0ml of 0.050 M NaOH . b)50.0ml of 0.100 M H2CO3 with 50.0ml of 0.150 M NaOH . c)50.0ml of 0.100 M H2CO3 with 50.0ml of 0.100 M...

  • A student must make a buffer solution with a pH of 1.00. Determine which weak acid...

    A student must make a buffer solution with a pH of 1.00. Determine which weak acid is the best option to make a buffer at the specified pH. O propionic acid, K =1.34 x 10 5,3.00 M acetic acid, Ka = 1.75 x 10,5.00 M O formic acid, Kg = 1.77 x 104,2.00 M sodium bisulfate monohydrate, K = 1.20 x 102,3.00 M Determine which conjugate base is the best option to make a buffer at the specified pH. sodium...

  • You create a 1 L solution of 0.1 M H2CO3. carbonic acid, H2CO3, is a diprotic...

    You create a 1 L solution of 0.1 M H2CO3. carbonic acid, H2CO3, is a diprotic acid with Ka1 = 4.5 x 10-7 and Ka2 = 4.7 x 10-11. a) What will the initial pH of the solution be? b) What volume of 0.1 M NaOH will you need to add to reach the second equivalence point( remember carbonic acid deprotonates to bicarbonate HCO3- and then can deprotonate further to CO32-? c) At the second equivalence point, what will the...

  • Prepare 250.00 mL of a 0.1 M carbonate buffer with a pH of 9.5. Use sodium...

    Prepare 250.00 mL of a 0.1 M carbonate buffer with a pH of 9.5. Use sodium bicarbonate NaHCO3 , 0.100 M HCl solution and 0.200 M NaOH solution. How do you make this buffer? Givens: Carbonic acid pKa1 = 6.35 | pKa2 = 10.33 Molar mass NaHCO3 = 84.01 g/mol

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT