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:

Humans

Homo sapiens, the species of bipedal primates to which all modern human beings belong, characterized by advanced brain development, and capabilities for complex language and culture.

Darwin's Theory

Darwin's Theory, known as the theory of natural selection, posits that organisms best adapted to their environment are more likely to survive and reproduce, leading to evolution.

Synthetic Theory

Also known as the modern synthesis, it combines Darwin's theory of evolution with Mendelian genetics, explaining evolution as changes in gene frequencies within populations.

Evolution

The mechanism by which diverse living entities are considered to have emerged and spread from their predecessors over the course of earthly history.