(A) Write a Balanced Equation Representing the Reaction of the Acid

question 12

Essay

(a) Write a balanced equation representing the reaction of the acid, H₂PO₄^- with the base, water.
(b) Write the expression for K_a of H₂PO₄^- in terms of concentrations of relevant species.

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Definitions:

Variable Overhead Rate Variance

The difference between the actual variable overheads incurred and the expected variable overheads based on standard rates.

Labor Rate Variance

The difference between the actual labor rate paid and the standard rate expected, multiplied by the total hours worked.

Labor Efficiency Variance

The variance between the real hours spent producing a good or service and the anticipated standard hours, times the standard wage rate.

Variable Overhead Rate Variance

The difference between the actual variable overhead costs incurred and the standard variable overhead expected for the actual production achieved.