to get a bright flame what position does the airhole have to be on a bunson burner

2 ANSWERS

1. amomipais82
   

   Hi,
   Bunsen Burner, heating device widely used in laboratories because it provides a hot, steady, smokeless flame. It is named after the German chemist, Robert Wilhelm Bunsen, who adapted William Faraday's concept of a gas-air burner in 1855 and popularized its use. The burner is a short, vertical tube of metal connected to a gas source; just inside the vertical tube is a jet through which the gas is forced, increasing its speed, and thus lowering its pressure (see Bernoulli's Principle). At the side of the tube, opposite the jet, is an air hole, allowing air to flow in, as it will because of the drop in pressure. The air mixes with the gas, producing a mixture that burns efficiently. The flow of air is controlled by an adjustable collar on the tube. When the hole is opened, by turning the collar so the hole in it fits exactly over the hole in the tube, the maximum amount of air can flow in. This produces the hottest flame, which has a bright blue conical centre. It can reach a temperature of 1500° C (2732° F). When the hole is closed, by rotating the collar, air is not allowed in, and the gas is burned less efficiently. This produces a luminous, yellow, sooty flame. The flame can be varied to anything between these two extremes.
   
   The same principle for mixing air with gas is used in the majority of gas-burning devices, such as gas cookers, hot-water boilers, and so on.
   
   Thanks

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2. Guest6218
   

   plzzzzz answer my question i need help!!!!

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