Use the Couples Cr2+ | Cr3+, -0

question 6

Multiple Choice

Use the couples Cr2+ | Cr3+, -0.424 V and Cr3+ | Cr2O72-, -1.33 V to determine E° of Cr2O72- | Cr2+.

• A) -0.02 V
• B) 1.75 V
• C) -1.75 V
• D) 0.81 V
• E) -1.10 V

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Definitions:

Drum Brakes

A type of brake that uses friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part known as a drum.

Phenolic Plastic

A type of plastic made by polymerizing phenols and aldehydes, used in electrical and mechanical components due to its insulating and heat-resistant properties.

Caliper Pistons

That part of a disc brake caliper that applies pressure against the brake pad. Pistons are made of steel, plastic, or aluminum.

Frictional Energy

The energy that is generated by the friction between two surfaces moving against each other, often converted into heat.