Question
Which of the following liberates O 2 upon hydrolysis?
JEE Advanced
Chemistry
s Block Elements
2020
JEE Advanced 2020 (Paper 1)
JEE Advanced Chemistry Question (2020) — Solution
Options
- A. Pb 3 O 4
- B. KO 2
- C. Na 2 O 2
- D. Li 2 O 2
Answer
B. KO 2
Step-by-step solution
A Pb 3 O 4 + H 2 O → No reaction ( B ) 2 KO 2 + 2 H 2 O → 2 KOH + H 2 O 2 + O 2 ( C ) Na 2 O 2 + 2 H 2 O → 2 NaOH + H 2 O 2 ( D ) Li 2 O 2 + 2 H 2 O → 2 LOH + H 2 O 2
Related: Chemistry — s Block Elements · All PYQ Banks