What Is K_a at 25°C for the Following Equilibrium

question 51

Multiple Choice

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

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

Grasp the importance of self-concept and self-esteem in personal development across the lifespan.

Acknowledge the challenges and issues related to aging, including retirement and the prevalence of diseases in elderly populations.

Explore the socio-emotional aspects of relationships across different stages of life.

Understand the concept of statistical significance in research findings.

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Definitions:

Direct Labor

The wages and benefits paid to workers who are directly involved in the production of goods or the provision of services.

Raw Material

The basic material from which a product is made, typically unprocessed or minimally processed.

Direct Labor Variances

The difference between the actual costs of direct labor and the standard or expected costs, used for budgeting and financial analysis.

Direct Labor Costs

The expenses related to the wages of employees who are directly involved in the production or manufacturing of goods. This is a specific type of direct cost.