Quantitatively the estimation of ozone can be done by which of the following process?

Question

Quantitatively the estimation of ozone can be done by which of the following process? (A) Decomposition into O2 and absorption of O2 into pyrogallol. (B) Volumetric method using KI and titration of the liberated iodine using hypo solution. (C) Oxidative ozonolysis method. (D) All methods given above.

Tardigrade Admin · Accepted Answer

2KI+H2O+O3 arrow 2KOH+O2+I2 2S2O32 -+I2 arrow S4O62 -+2I- 1 mole of O3=1 mole of I2=2 mole of S2O32 -

Q. Quantitatively the estimation of ozone can be done by which of the following process?

Decomposition into $O_{2}$ and absorption of $O_{2}$ into pyrogallol.

Volumetric method using $K I$ and titration of
the liberated iodine using hypo solution.

Oxidative ozonolysis method.

All methods given above.

$2 K I + H_{2} O + O_{3} \to 2 K O H + O_{2} + I_{2}$
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
1 mole of $O_{3} = 1$ mole of $I_{2} = 2$ mole of $S_{2} O_{3}^{2 -}$

Q. Quantitatively the estimation of ozone can be done by which of the following process?

Decomposition into O2​ and absorption of O2​ into pyrogallol.

Volumetric method using KI and titration of the liberated iodine using hypo solution.

Oxidative ozonolysis method.

All methods given above.

2KI+H2​O+O3​→2KOH+O2​+I2​ 2S2​O32−​+I2​→S4​O62−​+2I− 1 mole of O3​=1 mole of I2​=2 mole of S2​O32−​

Decomposition into $O_{2}$ and absorption of $O_{2}$ into pyrogallol.

Volumetric method using $K I$ and titration of
the liberated iodine using hypo solution.

$2 K I + H_{2} O + O_{3} \to 2 K O H + O_{2} + I_{2}$
$2 S_{2} O_{3}^{2 -} + I_{2} \to S_{4} O_{6}^{2 -} + 2 I^{-}$
1 mole of $O_{3} = 1$ mole of $I_{2} = 2$ mole of $S_{2} O_{3}^{2 -}$