1) If the pI for a particular amino acid is 7.5, at which pHwill the net charge on the molecule be zero?
2) Calculate the pH of 0.00756 M HNO3.
3) The isoelectric point of an amino acid is defined as:
a. the pH at which it exists in the basic form
b. the pH equals the pKa
c. the pH at which it exists in the acidic form
d. the pH at which the amino acid exits in the zwitterionform
4) Given the following reaction, the equilibrium expression willbe:
4 CuO (s) + CH4 (g) ↔ CO2 (g) + 4 Cu (s) + 2H2O (g)
a. [Cu]4/[CuO]4
b. [CuO]4/[Cu]4
c.[CO2][H2O]2/[CH4]
d. [CuO]/[Cu]
The following reaction is exothermic. Which of thefollowing will drive the reaction to the right (towardsproducts)?
CH4 (g) + 2 O2 (g) ↔ CO2 (g) + 2H2O (g)
a. An increase in temperature
b. A decrease in temperature
c. The addition of CO2
d. The removal of CH4
