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Homework Statement
10mLCxHy reacts with excess O2
After reacting and cooling until 298K the volume GAS = 55mL. Then NaOH is added and then the final volume of GAS = 35mL. Give the emperical formula of the hydrocarbon used in this reaction.
Homework Equations
-CxHy + (X+Y/4)O2 -> X CO2 + Y/2 H2O
-CO2+ 2NaOH -> Na2CO3 + H20
The Attempt at a Solution
10ml CxHY in the beginning and 55ml CO2 at the end => 1/X=10/55
55ml/X=2*VolumeH20/Y