Concept.. Plz tell if u know..
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I think in the 4 region
RajveerShekhawat1:
no
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its....second region....
with blue flame...
......When you have the intake valve (at the bottom of the bunsen burner) opened, the gas can mix with incoming oxygen. By the time is gets to the top of the tube, you've got a nice continuously-flowing source of well-mixed gas and oxygen. That allows combustion to occur very quickly because the methane and oxygen molecules don't have to travel very far to react, increasing the reaction rate, and therefore the rate at which heat is released.
so.....
In contrast, when the intake valve is closed (or when it's open and you're considering the outer non-luminous flame), the oxygen for the combustion reaction comes from the surrounding air, which is not thoroughly mixed with the gas at the time of ignition. That results in a slower reaction, and therefore a slower rate of heat being released.
with blue flame...
......When you have the intake valve (at the bottom of the bunsen burner) opened, the gas can mix with incoming oxygen. By the time is gets to the top of the tube, you've got a nice continuously-flowing source of well-mixed gas and oxygen. That allows combustion to occur very quickly because the methane and oxygen molecules don't have to travel very far to react, increasing the reaction rate, and therefore the rate at which heat is released.
so.....
In contrast, when the intake valve is closed (or when it's open and you're considering the outer non-luminous flame), the oxygen for the combustion reaction comes from the surrounding air, which is not thoroughly mixed with the gas at the time of ignition. That results in a slower reaction, and therefore a slower rate of heat being released.
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