JEE Advanced · 2022 · 28 Aug 2022 · Paper 2 · p-Block Elements

The reaction of Xe and

O_{2} F_{2}

gives a Xe compound P. The number of moles of HF produced by the complete hydrolysis of 1 mol of

P

is ____.

Answer: 4

Solution

Xenon reacts with

O_{2} F_{2}

to form

XeF_{4}

Xe + 2 O_{2} F_{2} \to XeF_{4} + 2 O_{2}

Hydrolysis of

XeF_{4}

3 XeF_{4} + 6 H_{2} O \to 2 Xe + XeO_{3} + \frac{3}{2} O_{2} + 12 HF

From the stoichiometry, 3 moles of

XeF_{4}

produce 12 moles of HF. Therefore, 1 mole of

XeF_{4}

produces

\frac{12}{3} = 4

moles of HF.

JEE Advanced · 2022 · 28 Aug 2022 · Paper 2 · Integer answer