The Substance, CoCl₂, Is Useful as a Humidity Indicator Because

question 79

Multiple Choice

The substance, CoCl₂, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

• A) cobalt dichloride
• B) cobalt(II) chloride
• C) cobalt chloride
• D) cobaltic chloride
• E) copper(II) chloride

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Definitions:

Authorized

Having official permission or approval to do something, especially in a legal or formal context.

Contract

A legally binding agreement between two or more parties that is enforceable by law.

Surveyed

The process of examining and recording the characteristics, boundaries, and features of a land area for construction, legal, or environmental purposes.

Delaminating

The process where layers of a composite material separate or split, often due to failure in bonding.