For a solute (X)aq,in an ideal aqueous solution,its activity equals its concentration.

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In an ideal aqueous solution, the activity of a solute is equal to its concentration. This is because an ideal solution follows Raoult's law, which states that the vapor pressure of each component in a solution is directly proportional to its mole fraction in the solution. In an ideal solution, the activity coefficient of a solute is equal to 1, which means that its activity is equal to its concentration.

For a Solute (X)aq,in an Ideal Aqueous Solution,its Activity Equals