If the flame used to heat a flask is an orange color and blackens the bottom of the flask, what correction should you make to solve this problem?
Correct answer: D. Allow more air into the collar of the burner.
- A. Move the flask farther from the flame.
- B. Move the flask closer to the flame.
- C. Allow less air into the collar of the burner.
- D. Allow more air into the collar of the burner.
- E. The problem is in the supply of the gas, and you cannot fix it.
Explanation
One of the basic adjustments to a burner is to assure enough air is mixing with the gas to form a blue cone-shaped flame. With insufficient air, carbon deposits will form on the flask and the flame will be orange.
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