Advertisements
Advertisements
Question
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?
Options
Basic property
Oxidising property
Reducing property
Acidic property
Advertisements
Solution
Reducing property
Explanation:
\[\ce{CuO}\] functions as a reducing agent because it is reduced to \[\ce{Cu}\] (reddish brown ppt.) in the presence of ammonia.
\[\begin{array}{cc}
\ce{3CuO + 2NH3 ->3Cu + N2 + 3H2O}\\
\phantom{..}\ce{\underset{Reduction}{\underline{{\uparrow}\phantom{...................}{\uparrow}}}}\phantom{...............}
\end{array}\]
APPEARS IN
RELATED QUESTIONS
Write a balanced chemical equation for the following:
Reaction of Ammonia with heated copper oxide.
Write balanced chemical equations for the following:
When the excess of ammonia is treated with chlorine.
State one relevant observation for the following
When ammonia gas is burnt in an atmosphere of excess oxygen.
Study the flow chart given and give balanced equations to represent the reactions A, B and C:
\[\ce{Mg3N2 ->[A] NH3 <=>[B][C] NH4Cl}\]
Name the following
Salt used to clean metal surface before soldering, tinning, etc.
Ammonia is manufactured by Haber Process.
Under what conditions do the reactants combine to form ammonia? Give a balanced equation for the reaction.
Describe all what you will observe and write chemical equation, when limited amount of ammonia gas is passed through the following aqueous solution:
CrCl3
Write equation for the following:
Catalytic oxidation of ammonia
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 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.
