Question
Hydrogen gas is produced during this reaction. Describe the test for hydrogen gas. Give the result of the test. [2 marl Test
Answer
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Elliot
Master · Tutor for 5 years
Answer
Test: A lit splint is brought near to the mouth of the test tube that is supposedly having Hydrogen Gas.Result: Upon engaging with the lit splint, the tube emits a characteristic 'pop' sound and the flame might go out, signifying water being output by the combustion of the hydrogen.
Explanation
When hydrogen gas is involved in a chemical reaction, a common test to verify its presence is famously known as the 'pop' or squeaky pop test. When the gas is collected in a tube and a burning or lit splint is placed near its opening or possibly introduced into it, the hydrogen gas reacts quickly with the oxygen in the air, causing a 'pop' sound. This a reaction between oxygen and hydrogen that produces water, hence this is known as a Rapid Combustion Reaction. After the reaction, the flame may get extinguished since during the test the hydrogen gas releases energy rapidly to produce water.