Verified Solution • 2025–26 Session moderate

QJEEM19Ch0fc2: JEE Main 2019 Chemistry - Class 11 JEEM19Ch0fc2 Solution: A metal on combustion in excess air forms X. X upon hydrolysis…

A metal on combustion in excess air forms X. X upon hydrolysis with water yields H2O2 and O2 along with another product. The metal is :

Multiple Choice Options

  • A Rb
  • B Mg
  • C Na
  • D Li

Step-by-Step Verified Solution

K, Rb and Cs form super oxides on reaction with excess air.

Rb + O2 →\to RbO2

2RbO2 + 2H2O →\to 2RbOH + H2O2 + O2 ↑\uparrow

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