Chemistry
Answer
(a) Dissolved minerals & salts in water — Provides minerals for living bodies for their growth & imparts taste to water.
(b) Dissolved air [O2, CO2, & NO2] in water Solutions — like :
- Dissolved O2 is useful for respiration in aquatic plants and animals.
- Dissolved CO2 for photosynthesis
- Dissolved NO2 is converted into nitrogenous compounds by bacteria and provides nourishment for plants.
Related Questions
Define the term 'solubility' of a solute in water. If 10 g. of a solute is added to 100 g. of water at 50°C and stirred, it is seen that the total solute dissolves at that temperature giving an unsaturated solution. Is 10 g. the solubility of the solute in water. Give reasons.
Give a reason why -
(a) Alcohol & water form a miscible mixture while oil & water do not.
(b) Boiled water tastes flat.
(c) On opening a bottle of soda the gas escapes out with a 'fizz'.
How are solutions generally classified. What is the basis of this classification.
Draw a table to differentiate - True solutions, colloidal solutions & suspensions - with respect to :
(i) Type of mixture
(ii) Solute particles in the mixture