Purchase Solution

# Ideal Gas Law: Bromine and Flourinne

Not what you're looking for?

1) Bromine gas reacts with flourinne gas to give a low boiling liquid. A sample of this liquid is vaporized at 42.0 degrees C into a flask with a volume of 252.2mL. The atmospheric pressure is 726.3 torr. The flask is found to contain 1.632 g of the compound.

a) Calculate the formula weight of the compound.

b) Is the compound bromine triflouride, bromine pentaflouride or dibromine hexaflouride?

2) Calculate the volume of H2 gas collected over water at 70.0 degreesC and a barometric pressure of 748.3 torr from the reaction of 1.588g of magnesium with excess hydrochloric acis.

##### Solution Summary

The solution is found using the ideal gas law N = PV/RT. The formula weight of a compound is discussed.

##### Solution Preview

n = PV/RT

P = 726.3torr (1 atm/760 torr) = 0.9557 atm
V = 0.2522 L
T = 42.0 + 273.15 K = 315.2 K
R = 0.08205 L*atm/mol*K

plug these things in for n gives...

n = 0.009320 mol

molecular weight = mass / moles = ...

##### 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.

##### 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.

##### General Chemistry - Classification of Matter

This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.

##### Thermochemistry

The quiz helps in revising basic concepts about thermochemistry.