Question

Soda extract is useful when given mixture has any insoluble salt, it is prepared by:
A. fusing soda and mixture and then extracting with water.
B. dissolving $NaHC{O_3}$ and mixture with dil $HCl$.
C. boiling $N{a_2}C{O_3}$ and mixture in dil$HCl$.
D. boiling $N{a_2}C{O_3}$ and mixture in distilled water.

Answer 1

In this question, we will proceed by letting the preparation of soda extract and its composition. Further we will know the processes of which it undergoes to get the required solution of the given problem.

Complete step by step answer: Soda extract is prepared by adding 1-2g salt mixture with 5-6g anhydrous $N{a_2}C{O_3}$ and 10ml of distilled water to dissolve them. In general composition soda extract is salt to anhydrous $N{a_2}C{O_3}$ is in the ratio of $1:2$ ratio. It is followed by heating, filtration, washing and analyzing if the given salt mixture is partly soluble or insoluble in water then soda extract is prepared for analysis.
Thus, the correct option is D. boiling $N{a_2}C{O_3}$ and mixture in distilled water .

Additional information:
Mixture is a physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions. Mixtures are further classified as suspension, collides, solutions.
Insoluble salt are ionic compounds that are insoluble in water when they are directly added into water.
Distilled water is water that has been boiled into vapour and condensed back into liquid in a separate container. Distilled water is one of the purified forms of water.
Solubility is a property referring to the ability for a given substance, the solute to dissolve in a solvent. Based upon extent of solubility solutions are classified as saturated, unsaturated and supersaturated solutions.

Note: In general composition soda extract is salt to anhydrous $N{a_2}C{O_3}$ is in the ratio of $1:2$ ratio. Here in the preparation of soda extract we will do only simple filtration i.e., with the filter paper preparatory method.