Tag: ammonia
Questions Related to ammonia
Which statement is false:
-
$\mathrm{N}\mathrm{H} _3$ is a Lewis base
-
$\mathrm{N}\mathrm{H} _{3}$ molecule is triangular planar
-
$\mathrm{N}\mathrm{H} _{3}$ does not act as reducing agent
-
$\mathrm{N}\mathrm{H} _{3}$ (liquid) is used as a solvent
Ammoniacal liquor is :
-
ammonia absorbed in water
-
ammonium hydroxide
-
aqueous solution of ammonia
-
all of the above
Ammonical liquor is a solution of ammonia in water and is also called as ammonium hydroxide.
Which of the following has maximum complex forming ability with a given metal ion?
-
$ \mathrm{P}\mathrm{H} _{3}$
-
$ \mathrm{B}\mathrm{i}\mathrm{H} _{3}$
-
$ \mathrm{N}\mathrm{H} _{3}$
-
$ \mathrm{S}\mathrm{b}\mathrm{H} _{3}$
Due to higher tendency of nitrogen to donate its lone pair of electron to form coordinate bond which is not common in other hydrides of VA group elements, it has maximum complex forming ability.
The uses of ammonia is/are :
-
manufacture of Explosives
-
manufacture of Plastics and Raisins
-
it is a main source of hydrogen
-
all of the above
Uses of ammonia: as a refrigerant, In manufacture of nitrogeneous fertilizer, Explosives, dry cells, nitrogen gas
Ammonia acts as a :
-
reducing agent
-
oxidising agent
-
bleaching agent
-
both A and C
Ammonia is a strong reducing agent. It dissolves alkali metals and other electropositive metals such as Mg,Ca,Sr,Ba etc. At low concentration deep blue solutions are formed these contain metal cations and solvated electrons.
${ Li }^{ + }+{ e }^{ - }\rightleftharpoons Li\ { Na }^{ + }+{ e }^{ - }\rightleftharpoons Na$
The oxidation state of nitrogen in ammonia molecule is -3.
-
True
-
False
What is the action of the Nessler's reagent on ammonia?
-
brown ppt.
-
blue ppt.
-
black ppt.
-
green ppt.
What is the action of the sodium metal on ammonia?
-
Ammonia gas is released
-
Hydrogen gas is released
-
Oxygen gas is released
-
Nitrogen gas id released
When Ammonical common salt solution is saturated with carbon dioxide we obtain ?
-
$NH _4HCO _3$
-
$(NH _4) _2CO _3$
-
$NaHCO _3$
-
$Na _2CO _3$
Ammonical solution of common salt.
Chlorine reacts with excess of ammonia to form:
-
${ NH } _{ 4 }Cl$
-
${ N } _{ 2 }+HCl$
-
${ N } _{ 2 }+{ NH } _{ 4 }Cl$
-
${ N } _{ 2 }+{ HCl} _{ 3 }$
Pure chlorine gas may react vigorously with ammonia gas. An excessive mix of the two gases in the air can produce hazardous compounds such as the explosive nitrogen trichloride. In facilities that use chloramination, the pure chlorine and ammonia need to be stored in separate, sealed rooms or buildings.
When ammonia is excess,
$3 Cl _2 + 8 NH _3 \rightarrow 6 NH _4Cl + N _2 (g)$