Water, pH and Macromolecules
Which of the following indicates that the pK of an acid is numerically equal to the pH of the solution when the molar concentration of the acid and its conjugate base are equal?

Michaelis-Menten equation
Henderson-Hasselbalch equation
Hardy-Windberg law
Haldanes equation

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Water, pH and Macromolecules
Which of the following statements about water is correct?

Nonpolar substances like oils are not soluble in it
It is critical for many of the chemical processes found in living systems
Polar substances that can form hydrogen bonds will dissolve in it
All of these

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Water, pH and Macromolecules
Salt dissolves well in water as water molecules

share electrons with the ions to make polar covalent bonds
form hydrogen bonds with the positively and negatively charged ions
surround the ions because of their charge but do not form hydrogen bonds
make nonpolar covalent bonds with the positively charged ions only

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