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When the air hole is covered on the Bunsen Burner its oxygen supply is made smaller. This makes the flame turn YELLOW - This is considered to be the safety flame as it is the most visible to the eye and it radiates less heat. When the Bunsen burners air hole is fully open there is a super heated blue flame which is the product of complete combustion.

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12y ago
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13y ago

Yellow

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Blue!

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11y ago

Blue

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Q: Color of flame in a complete combustion of gas from Bunsen burner?
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Related questions

How does a yellow flame on a Bunsen burner make things black but the roaring flame doesn't?

The flame of a Bunsen burner that is yellow in color will leave a black carbon residue due to the incorrect mixture of oxygen into the flame. Because there is not enough oxygen for complete combustion, the carbon reside is left behind. When the Bunsen flame has a sufficient amount of oxygen mixed in, hence the 'roaring flame', it has a blue color and does not leave a carbon residue due to complete combustion of the acetylene gas.


Why the dominant color of a nonluminous flame on a Bunsen burner blue?

The dominant color of a nonluminous flame on a Bunsen burner is blue. Whereas, the dominant color of a luminous flame on a Bunsen burner is orange.


What color flame is the hottest on a Bunsen burner?

Blue/Turqouise


Is yellow the hottest color on a Bunsen burner?

no, the blue flame is hottest


What is the color of a roaring flame on a Bunsen burner?

the colour of the roaring flame is blue


Why is there a yellow flame on the Bunsen burner?

The yellow color is from the incandescence of not burned soot particles.


When does the flame of a Bunsen burner becomes small or big?

when the flame comes big the color of the flame is orange but, when the flame comes small the color of the flame is blue


What is the colour of the Bunsen burner when it is halfway closed?

When the hole of a Bunsen burner is half closed (or half open) the flame is mostly blue-violet in color throughout, with no orange/yellow apparent as it would be with the hole fully closed. When the hole is fully open, the flame divides into a pale voilet color outer part with a cone of intense blue color within.


What the dominate color of aproperly adjusted falme for Bunsen burner?

A properly adjusted flame on a bunsen burner would have a flame that is blue. It would also appear that there is a lighter blue flame in the center, usually referred to as an inner blue cone, the hottest part of the flame.


The uses of Bunsen burner?

To heat chemicals or substances in science lab for experiment. There is an air hole in the Bunsen burner where you can screw loose to have open air hole that is the blue flame which is hotter. When there is a close air hole then the flame would be orange in color which is not as hot compared to the blue flame.


What are the characteristics of the luminous Bunsen flame?

A luminous flame is blue and is air/oxygen rich and occurs when the Bunsen vent is open. A non-luminous falme is very yellow and smoky and is fuel rich. It occurs when the Bunsen vent is closed.


What color should the flame of propane be to show complete combustion?

blue