MCQ
Among the given compound choose the two that yield same carbocation on ionization.


- A$A, C$
- B$B, D$
- ✓$A, B$
- D$B, C$


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$XNa_2HAsO_3 + YNaBrO_3 + ZHCl \longrightarrow$
$NaBr + H_3AsO_4 + NaCl$
The values of $X, Y$ and $Z$ in the above redox reaction are respectively
for the above reaction at $298 K , K _{ c }$ is found to be $3.0 \times 10^{-59}$. If the concentration of $O _{2}$ at equilibrium is $0.040 M$ then concentration of $O _{3}$ in $M$ is ...... .