Chlorine reacts with hot and concentrated NaOH and produces compound $(\mathrm{X})$ and $(\mathrm{Y})$. Compound(X) gives white precipitate with silver nitrate solution. The average bond order between Cl and O atoms in $(\mathrm{Y})$ is

JEE Main · 2020 · 07 Jan 2020 · Shift 1 · p-Block Elements

Chlorine reacts with hot and concentrated NaOH and produces compound

(X)

and

(Y)

. Compound(X) gives white precipitate with silver nitrate solution. The average bond order between Cl and O atoms in

(Y)

Answer: 1.67

Solution

Hot concentrated NaOH disproportionates chlorine as

3 C l_{2} + 6 NaOH \to 5 NaCl + NaCl O_{3} + 3 H_{2} O

. The product giving a white precipitate with silver nitrate is NaCl, so the other product is sodium chlorate. In

Cl O_{3}^{-}

the five bonding pairs are shared over three equivalent Cl–O linkages, giving an average bond order of

\frac{5}{3} \approx 1.67

JEE Main · 2020 · 07 Jan 2020 · Shift 1 · Numerical answer

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