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biochem Module 2 Exam Questions and Complete Solutions Graded A+
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biochem Module 2Exam Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, The pH of a solution of 0.0010 M NaOH is:
1
11
8
0
14 - Answer: 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]
Water is a unique molecule. Which of the following contributes to water's unique place in the chemical
world?
- The geometry of the molecule
- The polarity of the O-H bonds
- The ability of water molecules to hydrogen bond
- The bond angle of water
- All of the answers are correct - Answer: - All of the answers are correct
The bent shape of water is due to ______________.
- The dipole arrows in a water molecule - - The electronegativity difference between hydrogen and
oxygen
- The unequal electron sharing between hydrogen and oxygen
- The unshared electron pairs on the oxygen atom
- None of the answers are correct - Answer: - The unshared electron pairs on the oxygen atom
The H+ concentration of a solution is 1.2 x 10-3 M. What is the pH?
-1.20
1.20
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