Sulfurous acid (H2SO3) has pKa1 = 1.91 and pKa2 = 7.18. At what pH does [HSO3-] = [SO32-]?

Part I Multiple Choice Questions (2 points each)

1.- Which of the following pairs of compounds and ions could be used to form a buffer solution? (a) 0.10 M HCl and 0.10 M NaCl (b) 0.10 M NH4Cl and 0.10 M NH3 (c) 0.10 M HNO2 and 1.0 x 10-4 M NaNO2

2.- Sulfurous acid (H2SO3) has pKa1 = 1.91 and pKa2 = 7.18. At what pH does [HSO3-] = [SO32-]? (a) 1.91 (b) 4.54 (c) 7.18

3.- In the following reaction, identify the conjugate acid and conjugate base: NO2- + H2O ↔ HNO2 + OH-. (a) HNO2, OH- (b) NO2-, H2O (c) NO2-, HNO2

4.- The predominant for dissolved CO2 in water at pH 13.25 is: (a) CO2 (b) H2CO3 (c) HCO3- (d) CO32-

5.- 4. Sulfurous acid (H2SO3) has pKa1 = 1.91 and pKa2 = 7.18. At what pH does [HSO3-] = [SO32-]?

(a) 1.91 (b) 4.54 (c) 7.18

6.- Calculate the hydrogen ion concentration of a 0.100 molar solution of chloroacetic acid. Ka for chloroacetic acid = 1.36 x 10-3. (a) 0.0117 molar (b) 0.0369 molar (c) 7.39 x 10-12 molar

7.- Which is the strongest base? (a) HCl (b) CH3NH2 (c) RbOH

8.- The equivalence point of a titration is defined as (a) the point of the titration where the indicator changes. (b) the actual measured volume of titrant required to complete a titration. (c) the volume associated with actual stoichiometric quantity of titrant required to complete a titration.

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages

Order your essay today and save 10% with the discount code tCPCOVID10