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What are the factors that affect the value of the ionic products of water and how . Write in brief. |
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Answer» Answer: 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. Temperature (°C) Value of Kw 0 0.11 x 10-14 10 0.31 x 10-14 25 1.00 x 10-14 100 7.50 x 10-14 The value of Kw at 25°C is 1 x 10-14. Since pure water is neutral in nature, H+ ION concentration must be EQUAL to OH- ion concentration. [H+] = [OH˜] = x or [H+][OH-]=x2= 1 x 10-14 or x = 1 x 10-7 M or [H+] = [OH-] = 1 × 10-7 mol litre-1 |
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