How many grams of KI can be dissolved in 300gH2O at 10C?

Chemistry

1 answer:

olganol [36]3 years ago

4 0

Answer:

<em><u>About 408g of KI can be dissolved in 300 g of water at 10ºC.</u></em>

Explanation:

Look at the graph attached. It contains the solubility curves for severals solutes.

I have marked the solubility of KI at 10ºC: look the intersection of the vertical and horizontal dotted red lines: the corresponding solubility is read on the vertical axis. It is slightlly above the midpoint between 130 y 140 g per 100 g of water. Thus, you can approximate to 136 g / 100 g of water.

You need the number of grams dissolved in 300 g of water, thus mutilply by 300:

$\dfrac{136g}{100gH_2O}\times 300gH_2O=408g$

Thus, about 408g of KI can be dissolved in 300 g of water at 10ºC.

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