BioChem 210 Module 2 Exam - Portage
Learning
1. The pH of a solution of 0.0010 M NaOH is:: 11 (Kw=[H+][OH-] =
1.0 x 10-14;
[H+][0.0010] = 1.0 x 10-14 [H+]=1.0 x 10-11; pH=-log[1.0 x 10-
11]=11)
2. Water is a unique molecule. Which of the following
contributes to water's unique place i...
BioChem 210 Module 2 Exam - Portage Learning 1. The pH of a solution of 0.0010 M NaOH is:: 11 (Kw=[H+][OH -] = 1.0 x 10 -14; [H+][0.0010] = 1.0 x 10 -14 [H+]=1.0 x 10 -11; pH= -log[1.0 x 10 -
11]=11) 2. Water is a unique molecule. Which of the following contributes to water's unique place in the chemical world? : All of the answers are correct 3. The bent shape of water is due to ______________.: The unshared electron pairs on the oxygen atom 4. Which diagrams correctly represent a hydrogen bond?: A and D 5. The H+ concentration of a solution is 1.2 x 10 -3 M. What is the pH?: 2.92 6. If the Ka of an acid is 5.63 x 10 -3, what is the pKa?: 2.25 ([pKa = -log(5.63 x 10 -3) = 2.25]) 7. List the acids in DECREASING order of strength (strongest to weakest): Nitrous acid (Ka = 4.0 x 10 -4); acetic acid (Ka = 1.7 x 10 -5); phosphoric acid (Ka = 7.3 x 10 -3): Phosphoric acid, nitrous acid, acetic acid 8. Elemental iodine (I2) is a solid at room temperature. What is the dominant attractive force that exists between I2 molecules in the solid?: London forces 9. Which one of the following molecule s can form a hydrogen bond? (A.) HBr (B.) HCl (C.) NH3 (D.) CH4 (E.) H2: C. NH3 10. A hydrogen bond can form between a hydrogen atom bonded to oxygen, O-H, and ________.: N 11. In a bond between P and Cl, there exists a difference in electronegativity resulting in partial positive and partial negative charges. If a dipole arrow were added to this
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Approvedtutor. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R186,13. You're not tied to anything after your purchase.
