Chapter 6: Materials and Change 1. What mass of solute will dissolve in 100 g of water at the following
temperatures?
a. Xat 55°C =
b. Y at 15°C =
c. Z at 43°C=
2. If we put X, Y and Z in a container and stir them, which salts will dissolve
faster? Is there any possibility of separating mixture of X, Y and Z?
3. What is the solubility of X, Y and Z at 40°C? What can you conclude from
this observation?
4. At 20°C, 47 g of 'X' is dissolved in 100 g of water. Is this solution saturated
or unsaturated? How do we know?
5. Name the salt whose solubility decreases with increase in temperature.
Which salt has the highest solubility at 30°C?
6.​