6. A volatilization gravimetry experiment was conducted on an unknown organic liquid(presumed to only contain carbon, hydrogen, and oxygen). The liquid was massed (data inthe first column below) and then combusted in an excess of oxygen. The exhaust gas waspassed through a trap containing drierite and then through a trap containing ascarite. Thestarting and ending masses of the drierite and ascarite were used to obtain the data in thesecond two columns below.Mass Unknown12.437012.559012.2230Mass CO217.082217.249716.7882Mass H₂O13.984914.122113.7443A.) Calculate the mass percent of carbon, hydrogen, and oxygen in the unknown liquid. Thereare no outliers, so you can average the data before processing, if you wish.B.) Calculate the empirical formula of the unknown compound.

Gravimetry is a quantitative technique that measures the mass of the unknown compound. It is used to…

Answered: A.) Calculate the mass percent of…

A.) Calculate the mass percent of carbon, hydrogen, and oxygen in the unknown liquid. There are no outliers, so you can average the data before processing, if you wish.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.24QAP

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

6. A volatilization gravimetry experiment was conducted on an unknown organic liquid
(presumed to only contain carbon, hydrogen, and oxygen). The liquid was massed (data in
the first column below) and then combusted in an excess of oxygen. The exhaust gas was
passed through a trap containing drierite and then through a trap containing ascarite. The
starting and ending masses of the drierite and ascarite were used to obtain the data in the
second two columns below.
Mass Unknown
12.4370
12.5590
12.2230
Mass CO2
17.0822
17.2497
16.7882
Mass H₂O
13.9849
14.1221
13.7443
A.) Calculate the mass percent of carbon, hydrogen, and oxygen in the unknown liquid. There
are no outliers, so you can average the data before processing, if you wish.
B.) Calculate the empirical formula of the unknown compound.

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