done a lab,mix zinc w/acid, got hydrogen then i put the hydrogen in tubes, tested em to see if theyre pure (if get a bark when u put a lighter to the tube, its not pure). need help answering these questions::__
Have a burning splint about 15 cm long ready to introduce into the bottle of hydrogen just after it's lifted, mouth down and held vertically, from the glass plate. Observe carefully as the burning splint is slowly inserted into the bottle of hydrogen. Watch the mouth of the bottle carefully, as the splint is slowly withdrawn from the bottle. Insert the splint a second time, & again withdraw it slowly. Observe the inside walls of the bottle
9.Will the splint bum in the atmosphere of hydrogen? Explain.
10.Where is combustion taking place? Explain.
11.What did you observe on the walls of the bottle? Explain
12.Why does a test tube of hydrogen mixed w/air Xplode/Bark while a test tube of pure hydrogen burns quietly?
13.)Balance: Zinc + Sulfuric Acid =
Hydrogen + Oxygen =
2007-01-17
12:21:00
·
3 answers
·
asked by
truckin_90
2
in
Chemistry