What Is the PH of a 0 $K _ { \mathrm { a } 2 } = 1.0 \times 10 ^{- 11} ?$

question 111

Multiple Choice

What is the pH of a 0.40 mol L^-1 H₂Se solution that has the stepwise dissociation constants K_a1 = 1.3 × 10^-4 and $K _ { \mathrm { a } 2 } = 1.0 \times 10 ^{- 11} ?$

• A)2.14
• B)3.89
• C)4.28
• D)5.57

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Definitions:

Classical Conditioning

An educational method that happens by linking an external stimulus with a stimulus that occurs naturally.

Self-Regulation

The ability to understand and manage your behavior and reactions to feelings and things happening around you.

Self-Efficacy

The belief in one's ability to succeed in specific situations or accomplish a task, which can influence how people approach goals, tasks, and challenges.

Achievement Motivation

The need, or desire, to attain a certain standard of excellence.