Question

During The laboratory preparation how is ammonia dried and collected

Answer 1

 

THE LANGUAGE OF CHEMISTRY

 



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The Preparation of Gases in the Laboratory

 

Name of gas

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Formula

Prepared in the laboratory by:

methane



CH4

Heating a compound called sodium ethanoate with another compound soda-lime (sodium hydroxide).
The methane gas is collected over water.



oxygen



O2

Adding hydrogen peroxide solution to manganese IV oxide powder.
The oxygen gas is collected over water.



carbon dioxide



CO2

Adding dilute hydrochloric acid to calcium carbonate powder or chips.
The carbon dioxide gas is collected by downward delivery.



chlorine



Cl2

Heating concentrated hydrochloric acid with manganese IV oxide.
The chlorine gas is collected by downward delivery.



hydrogen



H2

Adding dilute acid to zinc granules.
The hydrogen gas is collected over water.



hydrogen sulphide



H2S

Adding dilute acid to iron II sulphide.
The hydrogen sulphide gas is collected over water.



hydrogen chloride



HCl

Adding concentrated sulphuric acid to sodium chloride.
The hydrogen chloride gas is collected by downward delivery



ammonia



NH3

Heating together ammonium chloride and calcium hydroxide.
The ammonia gas is dried by passing it through calcium oxide granules before it is collected by upward delivery.



nitrogen



N2

Taking out the other gases from a sample of air.
The nitrogen gas is collected over water.



sulphur dioxide



SO2

Adding concentrated sulphuric acid to pieces of copper.
The sulphur dioxide gas is dried by passing it through concentrated sulphuric acid before collecting it by downward delivery.