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Emily Summers




Acids and Bases

Acid Proton donor

Base Proton acceptor

Acids with Metals

Mg(s) + 2H+(aq) H2(g) + Mg2+(aq)

Acids with Carbonates

CO32-(aq) = 2H+(aq) H2O(l) + CO2(g)

Acids with Alkalis

H+ + OH- H2O

Acids with Bases

2H+(aq) + O2- H2O(l)

An acid base pair is a pair…

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Emily Summers




Buffer Solutions

A buffer solution is a mixture that minimises change to pH on addition of small
volumes of acid or base.

A buffer solution can be made from a weak acid and a salt of the weak acid, e.g.
CH3COOH/CH3COONa.

The salt will fully dissociate when it…

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Emily Summers




Phenolphthalei Colourless 8.3-1o Pink
n
Strong acid and alkali- either, Weak acid/ strong alkali-
phenolphthalein

Strong acid and weak alkali- methyl orange Weak acid/ weak base- neither




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