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WorksheetsPASS Biochemistry Quiz Buster One
Total questions: 10
Worksheet time: 10mins
True or false: at the half-equivalence point of a titration curve, pH = Ka.
True
False
What type of weak interaction is described as an electrostatic bond between a partially positive hydrogen atom in one molecule and an electronegative atom in another molecule?
Ionic interactions
Hydrophobic interactions
Hydrogen bonding
van der Waals interactions
In which state does water form the maximum number of hydrogen bonds?
Ice
Liquid
Gas
All answers apply
What would occur if oil was mixed with water?
Oil would become uniformly distributed throughout the water as they are both polar
The oil would aggregate together to reduce the surface area in contact with the water molecules
Oil would become uniformly distributed throughout the water as they are both nonpolar
None of the answers apply
How many times more acidic is a solution of pH 2 compared to a solution of pH 6?
3 times
4 times
1000 times
10,000 times
Which weak acids would be the most effective buffer at pH 5?
Propionic acid (pKa = 4.87)
Lactic acid (pKa = 3.86)
Benzoic acid (pKa = 4.19)
Iodic acid (pKa = 0.80)
The [H+] concentration in milk is 1.6 x 10-7 M, what is the pH?
1.60
6.80
7.00
6.50
A buffer solution comprises which of the following?
A weak acid in solution
A strong acid in solution
A weak base in solution
A weak acid and its conjugate base in solution
Calculate the pH when 0.8 mole of NaOH is added to 1 mole of formic acid (pKa = 3.75).
4.35
3.15
3.63
3.87
Calculate the pH value obtained when 1 mL of 0.01 M NaOH is added to 999 mL of pure water
5
9
10
12
