a.. describe the flame obtained from a bunsen burner with the hole open, and compare it to the flame obtained with the air hole closed
b..explain why the two flames are so different (hint:think about how oxygen gets mixed with the fuel)
2007-10-15 05:14:16 · 4 answers · asked by Babiiee Laura Jaynee =] 1 in Science & Mathematics ➔ Chemistry
a) Air hole open forms a BLUE flame
Air hole closed forms a Yellowish flame.
The color differences are due to the higher temperature of the flame. The higher the temperature the shorter the wavelenght of the light emitted (it means that lower temperatures produce yellowish to reddish light color and higher temperatures produce blueish light color).
b) Air hole open means a more efficient reaction with oxygen, and thus better combustion with fuel (higher temperature)
2007-10-15 05:48:01 · answer #1 · answered by CHESSLARUS 7 · 1⤊ 0⤋
Bunsen Burner Air Hole Closed
2016-12-17 12:18:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋
a) Hole open : Very hot, short in height, almost invisible, blue at the edges.
Hole closed : Colder than blue flame, luminous, long licking flame, lot of soot.
b) Complete combustion occurs when the hole is open.
(The hint is given for people to use them to think up answers, example YOU )
2007-10-15 05:49:29 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋
hole close :luminous flame
hole open :non luminous flame
2015-03-26 16:29:19 · answer #4 · answered by Alicia 1 · 0⤊ 0⤋