CHEM_210_Biochemistry_Module_2_Exam.pdf.pdf

CHEM 210 Biochemistry Module 2
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>> The pH of a solution of 3.2 x 10-10 M NaOH is:

A. 3.7

B. 3.7 x 10-10

C. 4.5

D. 13 E. 8.7

_correct answer _

C. 4.5 Kw=[OH][H] pH=-log[H]

, >>Which attribute contributes to water's unusual properties?

A. The geometry of the molecule

B. The polarity of the O-H bonds

C. The ability of water molecules to hydrogen bond

D. The bond angle of water

E. All of the answers are correct

_correct answer _

E. All of the answers are correct




>>What factor contributes to the bent shape of a water molecule?

_correct answer _

The unshared electron pairs on the oxygen atom




>>Which diagrams correctly represent a hydrogen bond?

_correct answer _

A and D H-bonding: Donors: OH, NH, FH Acceptors: O, N, H




>>The H+ concentration of a solution is 5.6 x 10-5 What is the pH?

_correct answer _

4.25 -log[H]=pH