Question

Solubility of one salt in water is 42 gram per hundred gram at 20 degrees. What mass of salt would be needed to produce a saturated solution containing 50 gram of water at 20 degree Celsius.


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Answer 1

Answer:

You can determine how many grams of sodium chloride, commonly known as table salt, can be dissolved in

100 g

of water at

80

∘

C

by taking a look at its solubility graph.

A substance's solubility graph tells you how its solubility changes, let's say starting from room temperature, when temperature is either decreased or increased.

As you can see, at room temperature sodium chloride has a solubility of approximately

35 g/100 g H

2

O

.

As temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than

40 g

of sodium chloride per

100