When lead nitrate is heated, lead oxide, oxygen gas and a brown mystery gas are formed. What is that mysterious gas?
Nitrogen dioxide
On strong heating lead nitrate decomposes as \(2\,\text{Pb(NO}_3)_2 \to 2\,\text{PbO} + 4\,\text{NO}_2 + \text{O}_2\).
The brown pungent gas evolved is nitrogen dioxide (NO\(_2\)). Nitrous oxide is colourless, carbon dioxide is colourless, and carbon monoxide is colourless too, so none match a brown gas.
Hence, Nitrogen dioxide is correct.
Similar Questions
A climate scientist puts sensors on the valley floor and on the slopes. During the day, the sensors on the slopes show higher temperatures and more wind blowing up from the valley. Which phenomenon does this indicate?
A physical geographer compares two coastal cities: one at the equator and one near the poles. Both receive the same duration of sunlight in a day. The reason the equatorial city remains warmer is:
An ecologist analyzes wind patterns and concludes they originate from the equator toward the poles. The underlying principle for this observation is:
Water stored in earthen pots remains cool even in summer due to _____.
The radiations emitted by a hot furnace are:
Two resistors A and B of \(12\ \Omega\) and \(24\ \Omega\) respectively are connected in series with a \(6\text{ V}\) battery. The total heat dissipated in the resistors in 1 second will be ______.
Important Questions from Heat and Transfer
In summer season, the top and outer surface of the house are painted white because:
Which of the following is a process in which hot, less dense materials rise upward and are replaced by colder, more dense materials?
What is the heat released by a heating filament rated 24 W when it is kept on for 6 seconds?
Space is left between logs of wood when they are burnt, so that:
On a hot summer afternoon, the tent made up of fabric will be preferred as white colour is:
