Methyl Red Is a Common Acid-Base Indicator

question 113

Multiple Choice

Methyl red is a common acid-base indicator. It has a K_a equal to 6.3 * 10^-6. Its un-ionized form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.8

• A) green
• B) red
• C) blue
• D) yellow
• E) violet

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Definitions:

Injunction

A judicial order that restrains a person from beginning or continuing an action that threatens or invades the legal right of another, or that compels a person to carry out a certain act, such as repairing an injury.

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Property Rights

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Negative Externality

A cost that affects a third party who did not choose to incur that cost, often associated with pollution or public health issues.