The solubility of a salt at different temperatures is tabulated below: Temperature (degree celsius)2030405060Solubility (g per 100 ml)34.237.240.142.645.8
Deepti takes 50 ml of water and adds 20 g of salt to it. The temperature of the solution is 20∘C. Choose the correct statement.
Lemonade is prepared by mixing lemon juice and sugar in water.You wish to add ice to cool it.Should you add ice to the lemonade before or after dissolving sugar?In which case would it be possible to dissolve more sugar? Does water dissolve an equal amount of salt and sugar? What can be done to dissolve more salt in a saturated solution of water and salt? [5 MARKS]
Question 5
Salt can be separated from its solution (salt dissolved in water) because (a) mixing of salt in water is a change that can be reversed by heating and melting of salt (b) mixing of salt in water is a change that cannot be reversed (c) mixing of salt in water is a permanent change (d) mixing of salt in water is a change that can be reversed by evaporation