The value for Kw is 1.0 x 10-14 at 298K, but this value is temperature dependent. Given what you know about Kw and acid/base chemistry, what will the pH of water be at 283K if the value for Kw is 0.29 x 10-14? Is this solution acidic, basic, or neutral?
a. pH = 7.26, acidic
b. pH = 7.26, neutral
c. pH = 7.00, neutral
d. pH = 14.54, basic
e. pH = 7.26, basic

The correct answer is option b.

Explanation:

The ionic product of water :

A pure water has equal concentration of hydrogen ions and hydroxide ions, hence neutral.

The ionic product of water at 283 K =

The pH of the water at 283 k;

A pure water has equal concentration of hydrogen ions and hydroxide ions,So water will e neutral at this temperature also.

The correct answer is option b.

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey

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