ben7 said:
Does anybody have these and where can i get them. I have 2001 soltutions in some book, 2002 standards package but no 2003 solutions, in particular Q17c Q20 and Q23b so far.. lol
Thanks
Ben
I have the answers in Success One book, and quickly the answers are:
17c: polymerisation is a random process, and a range of chain lengths form
20: Firstly say how useful products are created. Cellulose ---> glucose ---> ethanol (can be used as fuel) ---> ethylene (used as monomer in plastics)
- Problems include land clearing, and inefficiencyof acid hydrolysis (cellulose ---> glucose)
- Advantages include it is renewable resource.
Summing up, at present it is not viable due to alternatives, but there is a future for it, such as a replacement fuel.
23b:
Average titre = 18.1
Ba(OH)2 + 2HNO3 ---> Ba(NO3) + 2H2O
moles (Ba(OH)2) = 0.12 * 25/1000
= 0.003 moles
moles (HNO3) = 0.006 moles
conc. (HNO3) = 0.006/0.0181
= 0.33 mol/L