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Inorganic Chemistry

Blazing goIITian

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31 Jan 2010 12:03:28 IST

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Ionic product of water

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Ionic product of water

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Abhishek S

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31 Jan 2010 12:04:10 IST

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ionic product of water is 1x10-¹⁴ at 25 degree C. What will be ionic product at 90 degrees?

Abhishek S

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31 Jan 2010 17:15:58 IST

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ne ansrs

winx

Scorching goIITian

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6 Feb 2010 18:23:48 IST

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The variation of the pH of pure water with temperature is lyk dis.

The formation of hydrogen ions (hydroxonium ions) and hydroxide ions from water is an endothermic process. Using the simpler version of the equilibrium:

The forward reaction absorbs heat.According to Le Chatelier's Principle, if you make a change to the conditions of a reaction in dynamic equilibrium, the position of equilibrium moves to counter the change you have made.

According to Le Chatelier, if you increase the temperature of the water, the equilibrium will move to lower the temperature again. It will do that by absorbing the extra heat.

That means that the forward reaction will be favoured, and more hydrogen ions and hydroxide ions will be formed. The effect of that is to increase the value of Kw as temperature increases.

winx

Scorching goIITian

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6 Feb 2010 18:25:19 IST

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herez d chart, hope vil help u.......

T (°C)	K_w (mol² dm^-6)	pH
0	0.114 x 10^-14	7.47
10	0.293 x 10^-14	7.27
20	0.681 x 10^-14	7.08
25	1.008 x 10^-14	7.00
30	1.471 x 10^-14	6.92
40	2.916 x 10^-14	6.77
50	5.476 x 10^-14	6.63
100	51.3 x 10^-14	6.14

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