# Lowest concentration of ethanoate ions

## Homework Statement

A small quantity of each of the following is added to separate samples of an aqueous solution of ethanoic (acetic) acid. Which would leave the lowest concentration of ethanoate (acetate) ions?
1. sodium hydrogen carbonate solution

2. dilute hydrochloric acid

3. magnesium

4. dilute sodium hydroxide solution

5. ethanol

## The Attempt at a Solution

I chose 2) dilute HCl solution because the reaction of ethanoic acid dissociation is:

CH3COOH ↔ CH3COO- + H+.

If HCl was added, there will be more H+ present so therefore the equilibrium would shift to the left and decrease the concentration of ethanoate ions. Is this correct?

Thanks!