JEE Main 2022 · 26 Jun · Shift 1 · Chemistry Q68

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ChemistrySingle correct+4 / -1Question 68 of 90

Consider the following reaction :
$\mathrm{2HSO_4^-(aq)\xrightarrow[(2)\ Hydrolysis]{(1)\ Electrolysis}2HSO_4^-+2H^++A}$
The dihedral angle in product A in its solid phase at 110 K is :

104°

111.5°

90.2°

111.0°

Answer and worked solution

Official answer: C

Product A. Electrolysis of $\mathrm{HSO_4^-}$ gives peroxodisulphate, $\mathrm{S_2O_8^{2-}}$ , which hydrolyses to $\mathrm{H_2O_2}$ .

Dihedral angle of $\mathrm{H_2O_2}$ in the solid at 110 K: 90.2° (it is 111.5° in the gas phase).

(C)

Topics:Water and hydrogen peroxide Oxoacids

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JEE Main 2022 · 26 Jun · Shift 1, Chemistry question 68