Question

Name the type of solution formed in the following cases:
i) $20g$ of $NaCl$ in $100g$ of water.
ii) $36g$ of $NaCl$ in $100g$ of water.
iii) $45g$ of $NaCl$ in $100g$ of water at ${80}^{\circ }C$.
iv) Sulphur dissolved in $C{S}_2$
v) Nitrogen in soil

Answer 1

(i) Solubility of $NaCl$ is $36g$. Hence $20g$ of $NaCl$ will form unsaturated solution.

(ii) $36g$ of $NaCl$ implies that the solution is saturated.

(iii) Since $40g$ of $NaCl$ is required for saturation, $45g$ of $NaCl$ will implies that the solution is super saturated and that some of $NaCl$ will be precipitated.

(iv) Sulphur dissolves in $C{S}_2$. It will form a saturated solution.

(v) Nitrogen dissolves in soil. It will form a saturated solution.