1. Tardigrade
  2. Question
  3. Chemistry
  4. A substance which gives brick red flame and breaks down on heating to give oxygen and a brown gas is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A substance which gives brick red flame and breaks down on heating to give oxygen and a brown gas is

The s-Block Elements

Solution:

Calcium imparts brick red colour to the flame and calcium nitrate evolves $O_2$ and a brown gas, $NO_2$ upon heating.
$2Ca(NO_3)_2 \xrightarrow{\Delta} 2CaO +O_2 + \underset{\text{(Brown gas)}}{4NO_2 \uparrow}$