JEE Main 2017 · 8 Apr · Shift 1 · Chemistry Q49

ChemistrySingle correct+4 / -1Question 49 of 90

The number of S=O and S−OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :

(2 and 2) and (2 and 2)

(2 and 4) and (2 and 4)

(4 and 2) and (2 and 4)

(4 and 2) and (4 and 2)

Answer and worked solution

Official answer: D

Peroxodisulphuric acid $\ce{HO-SO2-O-O-SO2-OH}$ : 4 S=O and 2 S-OH. Pyrosulphuric acid $\ce{HO-SO2-O-SO2-OH}$ : also 4 S=O and 2 S-OH.

JEE Main 2017 · 8 Apr · Shift 1, Chemistry question 49