Question

How much solute will remain undissolved when 180 g of potassium iodide is added in 100 cm3 of water at 30°C?

Answer 1

`m_(undissolved)=27g`

Step-by-step explanation:

Hello,

In this case, we first define the solubility as the maximum amount of a solute that is completely dissolved in an specific amount of solvent and it is temperature-dependent. Thus for potassium iodide, its solubility at 30°C is 153 g per 100 cm3 of water, therefore, with the given amount, the undissolved amount results:

`m_(undissolved)=180g-153g=27g`

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