- Messages
- 49
- Reaction score
- 68
- Points
- 18
Am i
invisible :/http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w05_qp_1.pdf
Q1-c
i got D cz pb(c2h5)4 +o2 -->pbo + co2
2*4=8 c and 5*4=20h on react side so if we balance i got 8 oxy frm co2 and 10 oxygens from h2o n 1 oxy from pbo total 27 :/
Q4-c (explain it)
Q6-a (h2=hr-h1 so -395+297=-98 so y is it a ?)
Q12-d (i wrote the eq n for mg n s it is 1 mol of o2 n for al it is 3 moles (3o2) so y is the curve for s the highest ie ans shud be c ) :/
Q20-b (plz write the isomers )
Plz help