The Indicator Propyl Red Has K_a = 3

question 24

Multiple Choice

The indicator propyl red has K_a = 3.3 × 10^-6. What would be the approximate pH range over which it would change color?

• A) 3.5-5.5
• B) 4.5-6.5
• C) 5.5-7.5
• D) 6.5-8.5
• E) none of the above

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Definitions:

Creoles

Originally referring to people of pure or nearly pure Spanish descent born in the Americas, the term has evolved to encompass various regional meanings, including mixed European and black descent in the Caribbean and Louisiana.

Stamp Act Congress

A meeting in 1765 of delegates from several American colonies that protested against the British Stamp Act, marking a step toward unity against British rule.

Authority

The power or right to give orders, make decisions, and enforce obedience.

Colonial Resisters

Individuals or groups in colonies who opposed the control or policies of their colonial rulers, often through acts of civil disobedience, protests, or armed conflict, contributing to movements for independence or reform.