Question detail
Describe the procedure used to test for hydrogen gas produced when an acid reacts with a metal.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactions of acids
Question
Describe the procedure used to test for hydrogen gas produced when an acid reacts with a metal.
Answer
The test involves placing a small amount of the metal in a test tube, adding a few drops of dilute acid and then carefully bringing a lighted splint into contact with the gas that is released. If the splint produces a sharp ‘pop’ sound, hydrogen gas has been produced.
Explanation
The answer demonstrates knowledge of the practical test for hydrogen gas, including the use of a lighted splint and the characteristic pop sound, which is the key evidence for hydrogen.
Common mistake
Hydrogen Test Confusion
Students often state that hydrogen gas can be identified by its color or smell.
Emphasize that hydrogen gas is colorless and odorless, and the test involves using a lighted splint to produce a 'pop' sound.
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