Answer:
- The solubility of the salt is 35.16 (g/100 g of water).
- It would take 71.09 grams of water to dissolve 25 grams of salt.
- The percentage of salt that dissolves is 52.7 %
Explanation:
<h3>
a.</h3>
We know that 3.20 grams of salt in 9.10 grams of water gives us a saturated solution at 25°C. To find how many grams of salt will gives us a saturated solution in 100 grams of water at the same temperature, we can use the rule of three.

Working it a little this gives us :


So, the solubility of the salt is 35.16 (g/100 g of water).
<h3>
b.</h3>
Using the rule of three, we got:

Working it a little this gives us :


So, it would take 71.09 grams of water to dissolve 25 grams of salt.
<h3>C.</h3>
Using the rule of three, we got that for 15.0 grams of water the salt dissolved will be:

Working it a little this gives us :


This is the salt dissolved
The percentage of salt dissolved is:


