Advertisements
Advertisements
Question
An element has 2 electrons in its N shell. It reacts with a non-metal of atomic number 7. The compound formed reacts with warm water and produces a basic gas. Identify the elements and write a balanced chemical reaction.
Solution
An element that has 2 electrons in its N shell is Magnesium. The atomic number of magnesium is 12, and its electronic configuration is (2, 8, 2). A non-metal having atomic number 7 is Nitrogen. The compound formed with Magnesium and Nitrogen is Magnesium Nitride \[\ce{(Mg3N2)}\].
\[\ce{3Mg + N2 ->[800^\circ C] Mg3N2}\]
When Magnesium Nitride reacts with warm water, it produces ammonia gas.
The balance equation is as follows:
\[\ce{Mg3N2 + \underset{(warm water)}{6H2O} -> 3Mg(OH)2 + 2NH3 ↑}\]
APPEARS IN
RELATED QUESTIONS
Name the following
Substance used to dry ammonia
Name the following
Indicator that turns deep pink when treated with NH4OH.
Name the following
A nitride of divalent metal which reacts with hot water producing ammonia.
Give balanced chemical equations for each of the following:
Lab preparation of ammonia using an ammonium salt
Industrially, ammonia is obtained by direct combination of nitrogen and hydrogen.
(i) Write balanced equation for the direct combination of nitrogen and hydrogen.
(ii) Which of the metals - iron, platinum, copper - catalyse this direct combination?
(iii) Is the formation of ammonia promoted by high pressure or low pressure?
Write the equation for the formation of ammonia by the action of water on magnesium nitride.
Write the equations for the following reactions, which result in the formation of ammonia:
(i) A mixture of ammonium chloride and slaked lime is heated.
(ii) Aluminium nitride and water.
The product formed when ammonia reacts with oxygen is ______.
The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is ______.
On passing ammonia gas over heated copper oxide for some time, a reddish-brown residue is left behind. What property of ammonia is demonstrated here?
