The addition of concentrated $H N O_{3}$ to unknown metal produced an brown gas. Identity the gas?

C l_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

H_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

O_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C O_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

N O_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is E $N O_{2}$
Suppose a metal Copper reacts with conc. $H N O_{3}$ the reaction will be written as-
$C u$ $+$ $4 H N O_{3}$ $\to$ $C u (N O_{3})_{2}$ $+$ $2 N O_{2}$ $+$ $2 H_{2} O$
So, the orange or brown colored gas which is formed is Nitrogen dioxide or $N O_{2}$
Option E is the correct answer.

Suggest Corrections

Similar questions

H N O_{3}

H C l

	Appearance	Reactions with dilute $H C l$	Reaction with dilute $H N O_{3}$
Unknown metal #1	Dull gray solid with white oxide coating	Dissolved with bubbles of clear gas	Dissolved with bubbles of clear gas
Unknown metal #2	Solid; lustrous, smooth silver-gray surface	No Reaction	Dissolved with bubbles of orange gas

H N O_{3}

2

H N O_{3}

	Appearance	Reactions with dilute $H C l$	Reaction with Dilute $H N O_{3}$
Unknown metal 1	Dull grey solid with white oxide coating	Dissolved with bubbles of clear gas	Dissolved with bubbles of clear gas
Unknown metal 2	Solid, lustrous, smooth silver-grey surface	No reaction	Dissolved with bubbles of orange gas

H C l

Join BYJU'S Learning Program