Chem 28/10/25 Acidity of solutions

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7 Terms

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Ion product of water

Represented as Kw

Ion product of water is the product of the concentrations of hydrogen ions H+ and hydroxide ions OH− in water, expressed as:

As the concentration of H+ increases the PH decreases

<p>Represented as Kw</p><p>Ion product of water is the product of the concentrations of hydrogen ions <span>H+</span> and hydroxide ions<span> OH−</span> in water, expressed as:</p><p>As the concentration of H+ increases the PH decreases</p>
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Temperature effect on the ion product of water

As the temperature increases the larger extent of ion dissociation

Thus more ions are formed therefore decreasing the pH (More acidity)

However the solution is still neutral

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pH scale

a measure of how acidic or basic a substance is, ranging from

0 to 14pH = -log[H3O+']

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The pOH

Calculated the same way you calculate pH, except its a measure of Hydroxide (OH-) concentration

pH + pOH = 14

<p>Calculated the same way you calculate pH, except its a measure of Hydroxide (OH-) concentration</p><p></p><p>pH + pOH = 14</p>
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