Water, pH and Macromolecules
The pH of a solution is determined by

relative concentration of acids and bases
concentration of salt
environmental effect
dielectric constant of the medium

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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
share electrons with the ions to make polar covalent bonds
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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