An Aqueous Mixture of Phenol and Ammonia Has Initial Concentrations

question 52

Multiple Choice

An aqueous mixture of phenol and ammonia has initial concentrations of 0.200 M C₆H₅OH(aq) and 0.120 M NH₃(aq) .At equilibrium,the C₆H₅O^-(aq) concentration is 0.050 M.Calculate the equilibrium constant,K,for the reaction below. C₆H₅OH(aq) + NH₃(aq) C₆H₅O^- + NH₄⁺(aq)

• A) 0.10
• B) 0.24
• C) 2.1
• D) 4.2
• E) 4.8

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Definitions:

Direct Labor Variances

The difference between the expected (standard) cost of direct labor for actual production and the actual cost incurred.

Direct Labor

Direct labor involves the work of employees who are directly involved in producing goods or services, being a key factor in manufacturing costs.

Labor Efficiency Variance

The discrepancy in the actual worked hours versus the expected standard hours, multiplied by the standard rate for labor.

Direct Labor

The labor costs directly associated with the manufacture of specific goods or the provision of services, typically consisting of wages paid to production workers or technicians.