Question
Describe laboratory method for preparation of ammonia.
✓
Answer
Ammonia is prepared on laboratory scale by decomposition of the ammonium salts with calcium hydroxide or caustic soda.
i. $\underset{\substack{\text { Ammonium } \\ \text { chloride }}}{2 NH _4 Cl }+\underset{\text { hydroxide }}{ Ca ( OH )_2} \longrightarrow \underset{\text { Ammonia }}{2 NH _3}+\underset{\substack{\text { Calcium } \\ \text { chloride }}}{ CaCl _2}+2 H _2 O$
ii. $\underset{\substack{\text { Ammonium } \\ \text { sulphate }}}{\left( NH _4\right)_2 SO _4}+\underset{\begin{array}{c}\text { Sodium } \\ \text { Hydroxide } \\ \text { (caustic soda) }\end{array}}{2 NaOH } \longrightarrow \underset{\text { Ammonia }}{2 NH _3}+\underset{\begin{array}{c}\text { Sodium } \\ \text { sulphate }\end{array}}{ Na _2 SO _4}+2 H _2 O$
i. $\underset{\substack{\text { Ammonium } \\ \text { chloride }}}{2 NH _4 Cl }+\underset{\text { hydroxide }}{ Ca ( OH )_2} \longrightarrow \underset{\text { Ammonia }}{2 NH _3}+\underset{\substack{\text { Calcium } \\ \text { chloride }}}{ CaCl _2}+2 H _2 O$
ii. $\underset{\substack{\text { Ammonium } \\ \text { sulphate }}}{\left( NH _4\right)_2 SO _4}+\underset{\begin{array}{c}\text { Sodium } \\ \text { Hydroxide } \\ \text { (caustic soda) }\end{array}}{2 NaOH } \longrightarrow \underset{\text { Ammonia }}{2 NH _3}+\underset{\begin{array}{c}\text { Sodium } \\ \text { sulphate }\end{array}}{ Na _2 SO _4}+2 H _2 O$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are the limitations of valence bond theory?
Find out all the functional groups present in the following polyfunctional compounds.
a. Dopamine a neurotransmitter that is deficient in Parkinson’s disease.
b. Thyroxine the principal thyroid hormone.
c. Penicillin G, a naturally occurring antibiotic
a. Dopamine a neurotransmitter that is deficient in Parkinson’s disease.
b. Thyroxine the principal thyroid hormone.
c. Penicillin G, a naturally occurring antibiotic
Phytane is naturally occuring alkane produced by the alga spirogyra and is a constituent of petroleum. The IUPAC name for phytane is 2, 6, 10, 14-tetramethyl hexadecane. Write zig-zag formula for phytane. How many primary, secondary, tertiary and quaternary carbons are present in this molecule.
Explain with examples: Anionic detergents
Draw the flowchart showing the manufacture of NH3 by Haber process.
Explain with examples: Antiseptics
What is lanthanide and actinide series?
Why was Mendeleev’s periodic table readily accepted by scientific community?
What will be the approximate time taken for $90 \%$ decay of $^{174}Ir$ in terms of its half-life?
→Write a note on position isomerism.