Calculate the PH of a Solution Prepared by Dissolving 0

question 68

Multiple Choice

Calculate the pH of a solution prepared by dissolving 0.250 mol of benzoic acid (C₇H₅O₂H) and 0.150 mol of sodium benzoate (NaC₇H₅O₂) in water sufficient to yield 1.00 L of solution. The K_a of benzoic acid is 6.50 × 10^-5.

• A)4.409
• B)3.965
• C)10.035
• D)9.591
• E)5.190

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Definitions:

Net Operating Income

A financial metric that calculates a company's income after operating expenses are deducted, but before interest and taxes.

Absorption Costing

A method of inventory costing in which all costs of production (both fixed and variable) are treated as product costs.

Gross Margin

Gross margin is the difference between revenue and the cost of goods sold, divided by revenue, expressed as a percentage. It measures how much a company earns taking into consideration the costs that it incurs for producing its products or services.

Variable Costing

An accounting method that includes only variable costs—costs that change with production levels—in the calculation of cost of goods sold and excludes fixed costs.