A student dissolves 2.0 g of potassium nitrate in 100 mL of water at room temperature…
CHEMISTRY · Single correct · CBSE · Chemistry · Is Matter Around Us Pure? · Is Matter Around Us Pure?
Problem
A student dissolves 2.0 g of potassium nitrate in 100 mL of water at room temperature and observes that the resulting liquid is clear and colorless. Samples withdrawn from the top and bottom of the beaker show identical electrical conductivities. Which classification is most appropriate for the resulting mixture, and why?
(a) Heterogeneous, because the salt can be recovered by evaporating the water.
(b) Homogeneous, because the dissolved ions are uniformly distributed throughout the solution.
(c) Homogeneous, because the density is greater at the bottom than at the top of the beaker.
(d) Heterogeneous, because the mixture contains both solid and liquid components.