Finding the formula of copper(II) oxide

Description

Students heat copper(II) oxide in a glass tube while passing methane over it. The copper(II) oxide is reduced to copper. If the reactants and products are weighed carefully the formula of the copper oxide can be deduced. This could also be used simply as an example of reduction.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
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Apparatus Chemicals

Eye protection

Per pair of group of students:

Reduction tube, (hard glass test-tube with small hole near closed end)

1-hole bung with glass tube to fit the reduction tube

Rubber tubing

Clamp stand, boss and clamp

Bunsen burner

Heat resistant mat

Spatula

Balance – must be accurate to at least 0.01g

Copper(II) oxide (HARMFUL, DANGEROUS FOR THE ENVIRONMENT), 2 spatulas

Methane (natural gas) (EXTREMELY FLAMMABLE)

Refer to Health & Safety and Technical notes section below for additional information




2016



Students heat copper(II) oxide in a glass tube while passing methane over it. The copper(II) oxide is reduced to copper. If the reactants and products are weighed carefully the formula of the copper oxide can be deduced. This could also be used simply as an example of reduction.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.

The experiment is also part of the Royal Society of Chemistry's Continuing Professional Development course: Chemistry for non-specialists