Oxidizing vs Reducing Flame

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Outer Zone (Complete Combustion)

Middle Zone (Partial Combustion)

Inner Zone (Unburnt Gas)

Oxidizing Flame (Non-Luminous)

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Air Hole Status

OPEN. Sufficient oxygen mixes with the gas.

Combustion Type

Complete Combustion. Gas burns entirely to $CO_2$ and $H_2O$.

Temperature & Use

Extremely hot (~1500°C). Used for strong heating and Borax Bead Tests (Oxidizing bead).

Flame Anatomy

Characterized by a distinct bright blue inner cone and a pale, almost invisible outer envelope. Leaves no soot.

Bunsen Burner Settings

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