Notes

Salts
A salt is formed when an acid and a base are mixed and the acid releases H+ ions while the base releases OH- ions. This process is called hydrolysis. The pH of the salt depends on the strengths of the original acids and bases: Example: KCl is a salt that comes from KOH (a strong base) and HCl (a strong acid) so the pH = 7. NH4Cl a salt comes from NH4OH (a weak base) and HCl (a strong acid) so the pH is <7.
Acid
Base
Salt pH
strong
strong
pH = 7
weak
strong
pH > 7
strong
weak
pH < 7
weak
weak
depends on which is stronger
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These salts are acidic or basic due to their acidic or basic ions. When weak acids or weak bases react with water, they make strong conjugate bases or conjugate acids, respectively, which determines the pH of the salt.pHFormulas.png

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Definitions
Acid Strength
Base Strength
pH-pOH
14.1

Calc pH of Strong
Calc pH of Weak
14.2

Labs






pH 7 uses the simulations below

pH Simulation:


Discussion: