hydrocarbon is 270 g/mol. Determine the molecular formula of this compound.
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moles of co2 = 0,.44g/ 44 = 0.01 moles MOLES OF CARBON = 0.01
moles of H20 = 0.135/ 18 = 0.0075 moles MOLES OF H = 0.0075 * 2 = 0.015
mole ratio OF C TO H
= 0.01/0.01 0.015/0.01
= 1 : 1.5
= 2: 3
THE EMPIRICAL FORMULA IS THUS C2H3
To get the molecular formula we multiply the molar mass of the empirical formula by n so as to get the molecular formula
(C2H3)n = 270g/mole
(12* 2 + 3 )n= 270
27n = 270
n = 10
molecular formula is thus
Thank you. are the 2 and the 3 subscripts or coefficients?
sorry i understand it now 20 and 30 are the subscripts of Carbon and Hydrogen. Thank you very much : ) It means a lot
Yes they are. Welcome.
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