A Certain Rust Remover Containing Phosphoric Acid Has a Density

question 77

Multiple Choice

A certain rust remover containing phosphoric acid has a density of 1.685 g/mL.Titration of a 59.3 mL sample of the rust remover requires 1.40 L of 1.86 M NaOH to completely react with the acid to form sodium phosphate.What is the mass percent H₃PO₄ (98.0 g/mol) in the rust remover?

• A)14.6%
• B)19.8%
• C)39.1%
• D)69.7%
• E)85.1%

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Definitions:

Incremental Manufacturing Cost

The additional costs incurred to produce an extra unit of output, including additional materials, labor, and overhead expenses.

Relevant Range

The scope of operations where the premises regarding variable and fixed cost dynamics hold true.

Manufacturing Overhead Cost

Expenses related to the manufacturing process that are not directly attributable to individual products, such as utility costs, depreciation, and maintenance of equipment.

Produced Units

The quantity of items manufactured during a specific period.