Oblicz zawartosc procentową w alkanach:
a) metanie
b) etanie
c) propanie
d) butanie
e) pentanie
f) heksanie
g) heptanie
h) oktanie
i) nonanie
j) dekanie
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a) metan CH4
mCH4= mC + 4*mH= 12u + 4u = 16u
16u-100%
4u -x
x=4u*100%/16u= 25%-wodór
100%-25%=75%-węgiel
b) etan C2H6
mC2H6= 2*mC + 6*mH= 24u +6u = 30u
30u-100%
6u -x
x=6u*100%/30u= 20%-wodór
100%-20%=80%-węgiel
c) propan C3H8
mC3H8= 3*mC + 8*mH= 36u + 8u= 44u
44u-100%
8u -x
x=8u*100%/44u=18,18%-wodór
100%-18,18%=81,82%-węgiel
d)butan C4H10
mC4H10= 4*mC + 10*mH= 48u + 10u= 58u
58u-100%
10u-x
x=10u*100%/58u=17,24%- wodór
e) pentan C5H12
mC5H12= 5*mC + 12*mH= 60u + 12u= 72u
72u-100%
12u-x
x=12u*100%/72u=16,66%-wodór
100%-16,66%=83,34%-węgiel
f) heksan C6H14
mC6H14= 6*mC + 14*mH= 72u + 14u= 86u
86u-100%
14u-x
x=14u*100%/86u=16,27%-wodór
100%-16,27%=83,73%-węgiel
g)heptan C7H16
mC7H16= 7*mC + 16*mH= 84u + 16u=100u
100u-100%
16u-x
x=16%-wodór
84%-węgiel
h)oktan C8H18
mC8H18= 8*mC + 18*mH= 96u + 18u= 114u
114u-100%
18u-x
x=18u*100%/114u=15,78%-wodór
100%-15,78%=84,22%-węgiel
i) nonan C9H20
mC9H20= 9*mC + 20*mH= 108u + 20u= 128u
128u-100%
20u-x
x=20u*100%/128u=15,62%-wodór
100%-15,62%=84,38%-węgiel
j) dekan C10H22
mC10H22- 10*mC + 22*mH= 120u + 22u= 144u
144u-100%
22u-x
x= 22u*100%/144u=15,27%-wodór
100%-15,27%=84,73%-węgiel