molecular formula and empirical formula of the hydrocarbon
Not what you're looking for?
Complete combustion of a 0.0100 mol sample of a hydrocarbon, CxHy, gives 1.792 L of CO2 at STP and 1.261 g of H2O (a) What is the molecular formula of the hydrocarbon? (b) What is the empirical formula of the hydrocarbon?
Purchase this Solution
Solution Summary
It determines the molecular formula and empirical formula of certain hydrocarbon. The solution is detailed and received a '5/5' rating from the student who originally posted the question.
Solution Preview
Complete combustion of a 0.0100 mol sample of a hydrocarbon, CxHy, gives 1.792 L of CO2 at STP and 1.261 g of H2O (a) What is the molecular formula of the hydrocarbon? (b) What is the empirical formula of the hydrocarbon?
First find the moles of CO2 by the ideal gas law:
STP = 100 kPa and 273.15 K
V = 1.792 L
By ideal gas law,
PV = nRT
(100 kPa)(1.792 L) = n (8.31 L·kPa·K-1·mol-1)(273.15 K)
So
n = 0.0789 ...
Purchase this Solution
Free BrainMass Quizzes
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.