Question

Which of the principal characteristics of solutions are evident in the solutions of \({{\bf{K}}_{\bf{2}}}{\bf{C}}{{\bf{r}}_{\bf{2}}}{{\bf{O}}_{\bf{7}}}\) shown in Figure?

Short answer

The solutions are the same throughout (the colour is constant throughout), and the composition of a solution of \({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)in water can vary.

Step-by-step solution

Definition of solution

A solution is a mixture of two or more substances that have been dissolved in a liquid medium.

Example, Sugar in water

To avoid confusion with a mixture, which is heterogeneous in nature having composition different throughout.

Solution of Potassium dichromate

Potassium Dichromate is a hexavalent chromium compound. Its oxidizing qualities are less potent than potassium permanganate.

The potassium dichromate complex,\({\rm{K2Cr2O7}}\) is ionic compound consisting of colorless potassium ions, \({{\rm{K}}^{\rm{ + }}}\) and dichromatic ions, \({\rm{Cr2O}}{{\rm{7}}^{{\rm{2 - }}}}\) .

When potassium dichromate complex dissolves in water, it dissociates and mixture of potassium ions and dichromate ions is uniformly distributed throughout as the solution dissolves and dissociates.

Principal characteristics of solution shown by \({{\bf{K}}_{\bf{2}}}{\bf{C}}{{\bf{r}}_{\bf{2}}}{{\bf{O}}_{\bf{7}}}\) Solution

In solution, solute particles are uniformly distributed similarly\({{\rm{K}}_{\rm{2}}}{\rm{C}}{{\rm{r}}_{\rm{2}}}{{\rm{O}}_{\rm{7}}}\)Solution.

\({\rm{K2Cr2O7}}\)solution is homogenous in nature.

In\({\rm{K2Cr2O7}}\)solution, the particle size is at atomic level.