Granulated sugar is poured into a cup of hot tea but the liquid is not stirred
CHEMISTRY · Single correct · CBSE · Chemistry · Particulate Nature of Matter · Particulate Nature of Matter
Problem
Granulated sugar is poured into a cup of hot tea but the liquid is not stirred. One minute later, two 5 mL samples are taken—one from the surface and one near the bottom. Which prediction about the two samples is most reasonable?
(a) The two samples will have identical sugar concentrations because diffusion quickly equalizes concentration within a minute.
(b) The upper sample will contain more sugar because dissolved sugar rises to the surface as it is less dense.
(c) The two samples will differ in sugar concentration because the mixture is still heterogeneous.
(d) The two samples will have identical sugar concentrations only if the tea is above the boiling point of water.