acid and bases 1

what is an acid?

a compound that is capable of providing hydrogen ions (H+), in an aqueous solution.

known as a proton donor.

what is a base (alkalines)?

a compound that is capable of providing hydroxide ions (OH-), in an aqueous solution. 

known as proton acceptor.

what is an ion?

an atom or molecule that carries an electrical charge.

name 2 theories that describe the nature of acids and bases:

1) arrhenius thoery

2) brownsted lawry theory

arrhenious thoery:

• an acid is a substance that yields H+ ions when dissolved in water.

• a base yields OH- ions when dissolved in water.

neutralisation reaction:

acid + base → salt + water

limitations on the theory:

• reactions must take place in water

• bases must contain OH-, many bases do not

brownsted lowry theory

is defined as a proton donor (H+),and a base as a proton acceptor.

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