$\underset{\text{ (organic compound) }}{\mathrm{A}}+{\mathrm{O}}_2⟶\mathrm{X}+\mathrm{Y}+\mathrm{Z}$

Compound (A) in pure form does not give ppt. with ${\mathrm{AgNO}}_3$ solution, A mixture containing 70% of (A) and 30% of ether is used as an anaesthetic. compound (X) and (Y) are oxides while (Z) is a pungent smelling gas. (X) is a neutral oxide which turns cobalt chloride paper pink. Compound (Y) turns lime water milky and produces an acidic solution with water. Compounds (A), (X), (Y) and (Z) respectively will be :

${\mathrm{CHCl}}_3+{\mathrm{O}}_2\to {\mathrm{H}}_2\mathrm{O}+{\mathrm{CO}}_2+{\mathrm{Cl}}_2$

A is ${\mathrm{CHCl}}_3, \mathrm{X}$ is ${\mathrm{H}}_2\mathrm{O}, \mathrm{Y}$ is ${\mathrm{CO}}_2$ and Z is ${\mathrm{Cl}}_2$.

The chlorine atoms in chloroform $\left({\mathrm{CHCl}}_3\right)$ are covalently bound to the carbon atoms, making it impossible for them to ionise in ${\mathrm{AgNO}}_3$.
solution to create the silver chloride precipitate. ${\mathrm{CHCl}}_3$ makes up 70% of the combination.
As an anaesthetic, ether is utilised 30% of the time.
Anhydrous (blue) cobalt chloride paper and anhydrous copper sulphate paper may both test for liquid or vaporised water. The paper made with copper sulphate changes from white to blue. The cobalt chloride paper also changes colour from blue to pink. The chemicals in the paper combine with water molecules to form hydrates in both instances, which is what causes the colour shift. ${\mathrm{CO}}_2$
creates an acidic solution with water and renders lime water milky.

$\mathrm{CaO}+{\mathrm{CO}}_2\to {\mathrm{CaCO}}_3$

${\mathrm{CaCO}}_3$ is milky in appearance.

${\mathrm{H}}_2\mathrm{O}+{\mathrm{CO}}_2\to {\mathrm{H}}_2{\mathrm{CO}}_3$

${\mathrm{H}}_2{\mathrm{CO}}_3$ is a weak acid.
Cl is pungent smelling gas.