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Combustion of sulfur

The flask contains sulfur (a yellow solid S₈), the cylinder is full of oxygen.

A spoonful of sulfur powder is taken.

The sulfur is ignited in air.

In oxygen, sulfur burns with a blue flame.

The product of combustion is a colorless gas which condenses with moisture.

Let us introduce a bromothymol solution..

The solution turns to yellow.

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The flask contains sulfur (a yellow solid S₈), the cylinder is full of oxygen.