What Is K_a at 25°C for the Following Equilibrium Given $\rightleftharpoons$

question 58

Multiple Choice

What is K_a at 25°C for the following equilibrium given K_b (CH₃NH₂) = 4.4 × 10^-4 at 25°C.? CH₃NH₃⁺(aq) + H₂O(l) $\rightleftharpoons$ CH₃NH₂(aq) + H₃O⁺(aq)

• A) 4.4 × 10^-4
• B) 2.3 × 10³
• C) 4.4 × 10^-10
• D) 4.4 × 10⁴
• E) 2.3 × 10^-11

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Definitions:

Average Age

The arithmetic mean of the ages of a group of individuals or items, calculated by adding all ages together and dividing by the number of individuals or items.

Sample Statistic

A sample statistic is a numerical measure that describes a characteristic of a sample, such as the mean or standard deviation, derived from data collected from a subset of a population.

Sample

A subset of individuals, items, or data taken from a larger population for the purpose of analysis.

Average Age

The mean age of a group of individuals, calculated by adding their ages together and dividing by the number of individuals.