Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
holtadit:
The usual man, zinc and copper.
SO does the electrolyte's blue colour fade ?
DEGO:
if electrode is copper then it won't because cu ions tht lost from the solution to cathode replaced with one's from anode till anode all dissolve thn reaction stop
am not sure if the electrode is zinc but i guess the same
holtadit:
Actually never mind the above doubt. I made a mistake... i figured it out myself.
Heres another one...
How would you describe a liquid alkane ? Does it have a particular smell or any features that you could observe directly ? I am talkin with reference to the analysis part of Paper 6.
When lead nitrate and potassium iodide are reacted what is the name of reaction that takes place ? Is it precipitation or double displacement ?
DEGO:
--- Quote from: Ari Ben Canaan on April 10, 2010, 03:35:21 pm ---Actually never mind the above doubt. I made a mistake... i figured it out myself.
Heres another one...
How would you describe a liquid alkane ? Does it have a particular smell or any features that you could observe directly ? I am talkin with reference to the analysis part of Paper 6.
When lead nitrate and potassium iodide are reacted what is the name of reaction that takes place ? Is it precipitation or double displacement ?
--- End quote ---
precipitation i guess lead iodide is yellow ppt
holtadit:
I thought so too, but this kharban MS from 1992 said double displacememnt. Its not even the real MS !!
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