Question

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1. Vinegar consists of acetic acid, CH3COOH, and water. Write out the equilibrium expression for acetic...

1. Vinegar consists of acetic acid, CH3COOH, and water. Write out the equilibrium expression for acetic acid reacting with water.

2. Citric acid, H3C6H5O7, contributes to the acidity of many foods. Write out the equilibrium expression for citric acid reacting with water to lose one acidic proton.

Solutions

Expert Solution

(1) The equilibrium expression when acetic acid reacts with water is

                              CH3COOH(aq) + H2O(l) CH3COO-(aq) + H3O+(aq)

                                   

Since the concentration of solvent (H2O ) does not affect the equilibrium.

(2) The equilibrium expression when Citric acid reacts with water is

                              C6H8O7(aq) + H2O(l) C6H7O7-(aq) + H3O+(aq)

                               

Since the concentration of solvent (H2O ) does not affect the equilibrium.


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