Question

Ionic product of water at room temperature

Answer 1

Answer:

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The product of concentrations of H+ and OH- ions in water at a particular temperature is known as ionic product of water. The value of Kw increases with the increase of temperature, i.e., the concentration of H+ and OH- ions increases with increase in temperature. The value of Kw at 25°C is 1 x 10-14.

Answer 2

Ionic product of water at room temperature is as follows.

          $K_{w} = [H^{+}][OH^{-}]$

Explanation:

When an expression is formed by taking the product of concentration of ions raised to the power of their stoichiometric coefficients in the solution of a salt is known as ionic product.

This ionic product is represent by the expression $K_{w}$. Now, chemical equation which represents dissociation of water is as follows.

      $H_{2}O \rightleftharpoons H^{+} + OH^{-}$

Hence, expression for the ionic product of water at room temperature is as follows.

         $K_{w} = [H^{+}][OH^{-}]$

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