In the Titration of 50

question 9

Multiple Choice

In the titration of 50.0 mL of a 0.100 M HCl solution with 0.100 M NaOH, what is the pH of the solution after the addition of 20.0 mL of the NaOH solution?

• A) 1.00
• B) 1.22
• C) 1.15
• D) 1.37
• E) 12.63

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Definitions:

Piaget

A psychologist best known for his theory of cognitive development that describes how children's intellect grows through stages.

Preoperational Stage

The second of Piaget’s stages, characterized by illogical use of words and symbols, spotty logic, and egocentrism.

Sensorimotor Stage

The first of Piaget’s stages of cognitive development, characterized by coordination of sensory information and motor activity, early exploration of the environment, and lack of language.

Concrete Operational Stage

Piaget’s third stage, characterized by logical thought concerning tangible objects, conservation, and subjective morality.