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

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Water, pH and Macromolecules
The main difference between an acid and a base is that

acids donate hydrogen ions in water while bases accept hydrogen ions
bases donate hydrogen ions in water while acids accept hydrogen ions
acids are polar molecules and bases are not
bases are polar molecules and acids are not

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

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
surround the ions because of their charge but do not form hydrogen bonds

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