Give the Net Ionic Equation for the Reaction (If Any)that

question 54

Multiple Choice

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of K₂S and Fe(NO₃) ₂ are mixed.

• A) K⁺(aq) + NO₃^-(aq) → KNO₃(s)
• B) Fe²⁺(aq) + S^2-(aq) + 2 K⁺(aq) + 2 NO₃^-(aq) → FeS(s) + 2 K⁺(aq) + 2 NO₃^-(aq)
• C) Fe²⁺(aq) + S^2-(aq) + 2 K⁺(aq) + 2 NO₃^-(aq) → Fe²⁺(aq) + S^2-(aq) + 2 KNO₃(s)
• D) Fe²⁺(aq) + S^2-(aq) → FeS(s)
• E) No reaction occurs.

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Definitions:

Margin of Safety

Margin of Safety represents the difference between actual sales and break-even sales, indicating the amount by which sales can decrease before a business incurs a loss.

Break-Even Point

The point at which total costs equal total revenues, indicating that a business is not making a profit but also not incurring a loss.

Variable Cost

Costs that vary in direct proportion to changes in a business’s level of activity or volume of output produced, such as materials and labor.

Differential Cost

The difference in cost between two alternative decisions or scenarios.