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?

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

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

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

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

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

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