Write the equilibrium constant expression for the following reactions :
` HCl( aq) +H_2O(l) hArr H_3O^(+) +Cl^(-) (aq) `

Explanation

To write the equilibrium constant expression for the reaction:

\[ \text{HCl(aq)} + \text{H}_2\text{O(l)} \rightleftharpoons \text{H}_3\text{O}^+(aq) + \text{Cl}^-(aq) \]

we will follow these steps:

### Step 1: Identify the reactants and products
In the given reaction, the reactants are HCl and H2O, and the products are H3O+ and Cl-.
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