CH3-CH2-CH2-CH3----> CH4 + CH2=CH-CH3
1OOmol 15mol 15mol
---.>CH3-CH3 + CH2=CH2
25mol 25mol
Presupunand ca plecam de la 100mol butan, rezulta 15 mol propena si tot 15mol metan, 25mol etena si tot 25mol etan--->total 80mol
Prin diferenta (100-80)moli sunt moli butan netransformat
a) din 100mol butan rezulta 25mol etena
2000mol butan niu= 500mol; V=500molx22,4l/mol etena
b) 20%