For a solution of acetic acid in water list the major species in decreasing order of concentration

The solution of acetic acid in water is represented by this chemcial equation:

CH3COOH + H2O ⇄ H3O+ + CH3COO-

Those are four species:

1) CH3COOH (molecule)

2) H2O (molecule)

3) H3O+ (ion)

4) CH3COOH- (ion)

Given that the solvent is water that is the specie with with the highest concentration.

The solute is CH3COOH so it is the second higher concentration.

Given that CH3COOH is a weak acid the concentration of the products (CH3COO- and H3O+) is low.

And given the stoichiometry the concentration of both species CH3COOH- and H3O+ are equal.

So, the species listed in decreasing order of concentration are:

H2O > CH3COOH > H3O+ , CH3COO-

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