Harry Kroto 2004 Candle Flame. .

Post on 19-Jan-2016

221 views 0 download

Tags:

Transcript of Harry Kroto 2004 Candle Flame. .

Harry Kroto 2004

Candle Flame.

http://www.nationmaster.com/encyclopedia/Flame

http://www.woodrow.org/teachers/ci/1992/BUNSEN.GIF

yj-education.com

Bunsen Burner

Harry Kroto 2004

Harry Kroto 2004

In zero gravity, convection does not carry the hot combustion products away from the fuel source, resulting in a spherical flame front.

at: chemistry.about.com/.../f/firegravity.htm

Harry Kroto 2004

Different flame types of a Bunsen burner depend on oxygen supply. On the left a rich fuel mixture with no premixed oxygen produces a yellow sooty diffusion flame and on the right a lean fully oxygen premixed flame produces no soot and the flame color is produced by molecular radical band emission.

Harry Kroto 2004

Sodium Flame Test

Line Caused by.. Wavelength (Å)             Line Caused by.. Wavelength (Å)

A O2 7594-7621 d Fe 4668

B O2 6867-6884 e Fe 4384

C H 6563 f H 4340

a O2 6276-6287 G Fe & Ca 4308

D - 1, 2 Na 5896 & 5890 g Ca 4227

E Fe 5270 h H 4102

b - 1, 2 Mg 5184 & 5173 H Ca 3968

c Fe 4958 K Ca 3934

F H 4861

at: web.me.com/dtrapp/ePhysics.f/labII_9.html

Harry Kroto 2004

NaCl