A 250-ML Sample of 1

question 54

Multiple Choice

A 25.0-mL sample of 1.00 M NH₃ is titrated with 0.15 M HCl. What is the pH of the solution after 15.00 mL of acid have been added to the ammonia solution? [K_b(NH₃) = 1.8 × 10^-5]

• A) 10.26
• B) 9.30
• C) 9.21
• D) 8.30
• E) 8.21

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Definitions:

Individual Accountability

The obligation of an individual to account for his/her activities, accept responsibility for them, and to disclose the results in a transparent manner.

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A psychological phenomenon that occurs within a group of people when the desire for harmony or conformity results in irrational or dysfunctional decision-making outcomes.

Creative Solution

An innovative or imaginative answer to a problem that is not obvious and requires thinking outside the conventional framework.

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