Use the Standard Reaction Enthalpies Given Below to Determine Δ_rH°

question 30

Multiple Choice

Use the standard reaction enthalpies given below to determine Δ_rH° for the following reaction: 2NO(g) + O₂(g) → 2NO₂(g) Δ_rH° = ?
Given:
N₂(g) + O₂(g) → 2NO(g) Δ_rH° = +183 kJ
1/2 N₂(g) + O₂(g) → NO₂(g) Δ_rH° = +33 kJ

• A)-150. kJ mol^-1
• B)-117 kJ mol^-1
• C)-333 kJ mol^-1
• D)+115 kJ mol^-1
• E)+238 kJ mol^-1

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Definitions:

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good consumers are willing to buy.

MR (Marginal Revenue)

The increase in revenue that results from selling one additional unit of a product or service.

MC (Marginal Cost)

The additional cost incurred in producing one more unit of a good or service.

Downward-Sloping Demand

A representation of the relationship between price and quantity demanded, indicating that as price decreases, demand increases.