Okay, the CHEMISTRY exam is in 2days as you might know, and I am confused about something...
Questions that ask for reagents or chemicals to break or catalyse reactions.
HOW do I distinguish between when I should use
HCL or H2SO4?
& then, how the **** do I know which concentration to use??? Dilute. moderately concentrated or concentrated???
This is completely puzzling me...
Any help will be highly appreciated. Cheers!
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Last edited by josh_a_y; 25-01-2010 at 20:33.
- 25-01-2010 20:29