Chemistry, asked by Anonymous, 5 months ago


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Write an experiment to identify the gas produced by various methods.

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Answers

Answered by IINiRII
7

Explanation:

\huge\color{red}\underbrace{hydrogen}

To test for hydrogen a small sample can be ignited. Hydrogen will make a squeaky pop when lit in air, care needs to be taken with this test as large amounts of hydrogen are very explosive in air.

Hydrogen reacts very quickly with oxygen to form water.

\huge\color{red}\underbrace{oxygen}

Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen.

This is a simple but effective test for oxygen. There are sometimes confusions as the splint can create a pop very slightly on re-ignition, which sometimes is mistaken for hydrogen. A hydrogen pop is much more violent, sometimes enough to completely extinguish the splint.

\huge\color{red}\underbrace{carbon-dioxide}

There are two tests for carbon dioxide. Firstly it will extinguish a flame, however, as any oxygen free gas will also extinguish a flame this is a poor gas test and may result in misidentification.

way of testing for Carbon dioxide is to bubble it through lime water. A positive test will result in the lime water turning milky. Lime water turns milky as the Calcium hydroxide (chemical name for limewater) reacts with carbon dioxide to form Calcium Carbonate which is insoluble in water and thus forms a milky white precipitate.

hope it helps you..

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