1.
H3C-CH=CH2, C3H6
miu = 3x12+6x1 = 42 g/mol
42 g ....... 3x12 g C ..... 6x1 g H
100% (g) ...... a% C ........ b% H
= 85,71 = 14,29
2.
H3C-CH=CH2 + H2 --Ni--> H3C-CH2-CH3
propan
H3C-CH=CH2 + Br2 --CCl4--> H3C-CHBr-CH2Br
1,2-dibromopropan
H3C-CH=CH2 + H2O --(H+)--> H3C-CH(OH)-CH3
2-propanol
3.
4,2 tone m tone
C3H6 + Br2 --> C3H6Br2
42 2x80
=> m = 4,2x2x80/42
= 16 tone Br2 aditionat
stim ca c% = mdx100/ms
md = 16 tone, c% = 2% , ms = ?
=> ms = mdx100/c%
= 16x100/2 = 800 tone solutie Br2