Holooly Plus Logo

Question 6.9: Calculating the Enthalpy of Reaction from Standard Enthalpie...

Calculating the Enthalpy of Reaction from Standard Enthalpies of Formation

Large quantities of ammonia are used to prepare nitric acid. The first step consists of the catalytic oxidation of ammonia to nitric oxide, NO.

4 \mathrm{NH}_{3}(g)+5 \mathrm{O}_{2}(g) \stackrel{\mathrm{Pt}}{\longrightarrow} 4 \mathrm{NO}(g)+6 \mathrm{H}_{2} \mathrm{O}(g)

What is the standard enthalpy change for this reaction? Use Table 6.2 for data.

PROBLEM STRATEGY You record the values of \Delta H_{f}^{\circ} under the formulas in the equation, multiplying them by the coefficients in the equation. You calculate \Delta H^{\circ} by subtracting values for the reactants from values for the products.

The "Step-by-Step Explanation" refers to a detailed and sequential breakdown of the solution or reasoning behind the answer. This comprehensive explanation walks through each step of the answer, offering you clarity and understanding.
Our explanations are based on the best information we have, but they may not always be right or fit every situation.
The blue check mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.
Already have an account?

Related Answered Questions