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24 August, 12:24

Which one of the following statements about standard states is incorrect?

a. The standard state of an aqueous solute is a saturated solution in water.

b. The standard state of a solid compound is the pure solid.

c. The standard state of a gaseous compound is the gas at a pressure of 1 atmosphere

d. The standard state of a liquid compound is the pure liquid.

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  1. 24 August, 14:15
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    This is incorrect:

    The standard state of an aqueous solute is a saturated solution in water.

    Explanation:

    The standard state of a material (in chemistry) is defined to compare it with other conditions.

    For example the standard state of a gas is defined at 1 atmospheric pressure.

    The standard state of a liquid is the pure liquid and for a solid is pure solid.

    Similarly for an aqueous solution (a solute dissolved in water) we have defined it as the condition when one mole of a substance is dissolved in one litre of solution (which also means one molar solution).

    Thus the given statement is wrong for an aqueous solution.
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