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Which reagent is commonly used to test for the presence of alkynes?

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Question: Which reagent is commonly used to test for the presence of alkynes?

Options:

  1. Bromine water
  2. Silver nitrate
  3. Sodium metal
  4. Bayer\'s reagent

Correct Answer: Bromine water

Solution: 

Bromine water is used to test for the presence of alkynes, which will decolorize the solution.

Which reagent is commonly used to test for the presence of alkynes?

Practice Questions

Q1
Which reagent is commonly used to test for the presence of alkynes?
  1. Bromine water
  2. Silver nitrate
  3. Sodium metal
  4. Bayer's reagent

Questions & Step-by-Step Solutions

Which reagent is commonly used to test for the presence of alkynes?
Correct Answer: Bromine water
  • Step 1: Understand that alkynes are a type of hydrocarbon that contain a triple bond between carbon atoms.
  • Step 2: Know that to test for the presence of alkynes, we need a specific reagent.
  • Step 3: Identify that bromine water is a common reagent used for this purpose.
  • Step 4: When bromine water is added to a solution containing alkynes, it will react with them.
  • Step 5: Observe that the bromine water changes color, usually from brown to colorless, indicating the presence of alkynes.
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