Chemistry

Which test should be made before collecting hydrogen in a gas jar?

Hydrogen

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Answer

The gas should be collected only after all the air in the apparatus has escaped. This can be ascertained by collecting some amount of gas in a test tube and taking it to a flame. If the gas burns quietly, then there is no more air in the flask.

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Chemistry

Which test should be made before collecting hydrogen in a gas jar?

Hydrogen

Answer

Related Questions

Why is hot concentrated sulphuric acid not used in the preparation of hydrogen?

For laboratory preparation of hydrogen, give the following(a) materials used(b) method of collection(c) chemical equation(d) fully labelled diagram.

(a) Name the impurities present in hydrogen prepared in the laboratory.(b) How can these impurities be removed?

Why is nitric acid not used in the preparation of hydrogen?

For laboratory preparation of hydrogen, give the following
(a) materials used
(b) method of collection
(c) chemical equation
(d) fully labelled diagram.

(a) Name the impurities present in hydrogen prepared in the laboratory.
(b) How can these impurities be removed?