The quantitative estimation of O_3 is based on

MCQ

The quantitative estimation of $O_3$ is based on

✓
Its reaction with $PbS$
B
Its reaction with $NO$
C
Its reaction with $KI$ and titration of $I_2$ liberated with sodium thiosulphate
D
Its reaction with $H_2O_2$ in presence of $K_2Cr_2O_7$

✓

Answer

Correct option: A.

Its reaction with $PbS$

a
correct order of electron gain enthalpy is :$O < s > Se > Te$

$\Rightarrow S > Se > Te > O$

(Oxygen shows least electron gain enthalpy due to small size of atom)

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$Hex - 3 - ynal\xrightarrow[\begin{subarray}{l}
(ii)\,PB{r_3} \\
(i)\,Mg/ether \\
(i)\,C{O_2}/{H_3}{O^ + }
\end{subarray} ]{{(i)\,NaB{H_4}}}\,?$

List $- I$ Electronic configuration of elements	List $- II$ $\Delta_{ i }$ in $kJ\, mol-1$
$(a)$ $1 s ^{2} 2 s ^{2}$	$(i)$ $801$
$(b)$ $1 s ^{2} 2 s ^{2} 2 p ^{4}$	$(ii)$ $899$
$(c)$ $1 s^{2} 2 s^{2} 2 p^{3}$	$(iii)$ $1314$
$(d)$ $1 s ^{2} 2 s ^{2} 2 p ^{1}$	$(iv)$ $1402$

Choose the most appropriate answer from the options given below