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The bottle of liquid ammonia should be placed in cold water or ice for some time before opening its lid.
Describe the laboratory preparation of ammonia gas with a labelled diagram.
Study the given figure and answer the following questions.
- Which gas is being collected in the gas jar?
- Write the balanced chemical equation for the preparation of this gas.
- Which litmus is used to identify this gas?
- Why the hard glass test tube is slightly inclined?
- What is the use of the lime tower?
Write any four uses of ammonia gas.
What happens in the following processes? Write with a balanced chemical reaction.
- The mixture of ammonium chloride and calcium hydroxide is heated.
- Ammonia is mixed with water.
- Ammonia reacts with hydrochloric acid.
What is downward displacement of air?
Write down the molecular formula and molecular weight of ammonia.
Write any two physical properties of ammonia gas.
Which gas is obtained by reacting slaked lime and ammonium chloride?
What is Haber's process?
Why do moist red litmus paper change into blue when it is inserted into the jar containing ammonia?
When a burning ribbon of a metal was taken in a jar containing gas, it formed white and black powder. The white powder can be used as medicine to cure hyperacidity.
- What happens when the white substance is dissolved in water? Write only balanced chemical equation.
- How does the solution help to reduce the hyperacidity of stomach?
What is the odour of ammonia gas?
Write the name of the compound formed when ammonia dissolves in water.
In what ratio should ammonium chlroide and calcium hydroxide be mixed for the laboratory preparation of ammonia gas?
Why is ammonia gas passed into lime tower before collection in gas jar?