The image consists of a multiple-choice selection with four options, each indicating a value in kilojoules (kJ):- ○ 437.0 kJ- ○ 256.0 kJ- ○ 103.6 kJ- ○ -103.6 kJThere are no graphs or diagrams present in the image. **Calculate ΔH for the reaction:**\[ \text{NH}_3 \, (g) + \text{CH}_4 \, (g) \rightarrow \text{HCN} \, (g) + 3 \, \text{H}_2 \, (g) \]Using the following data:1. \[ \text{N}_2 \, (g) + 3 \, \text{H}_2 \, (g) \rightarrow 2 \, \text{NH}_3 \, (g) \quad \Delta H = -91.8 \, \text{kJ/mol} \]2. \[ \text{C} \, (s, \, \text{graphite}) + 2 \, \text{H}_2 \, (g) \rightarrow \text{CH}_4 \, (g) \quad \Delta H = -74.9 \, \text{kJ/mol} \]3. \[ 2 \, \text{C} \, (s, \, \text{graphite}) + \text{H}_2 \, (g) + \text{N}_2 \, (g) \rightarrow 2 \, \text{HCN} \, (g) \quad \Delta H = 270.3 \, \text{kJ/mol} \]**Explanation:**The goal is to calculate the enthalpy change (ΔH) for the reaction between ammonia \((\text{NH}_3)\) and methane \((\text{CH}_4)\) to form hydrogen cyanide \((\text{HCN})\) and hydrogen gas \((\text{H}_2)\), using the provided thermochemical data for related reactions.To determine ΔH for the target reaction, you may need to manipulate and combine the given equations using Hess's law.

Answered: Image /qna-images/answer/9384a239-eaa1-4514-b6f9-2b22ca8ccb6b.jpg

Calculate AH for the reaction NH3 (g) + CH4 (g) → HCN (g) + 3 H2 (g), from the following data. N2 (g) + 3 H2 (g) → 2 NH3 (g) / mol AH 91.8 kJ C (s, graphite) + 2 H2 (g) → CH, (g) - 74. 9 kJ / mol ΔΗ- 2 C (s, graphite) + H2 (g) + N2 (g) → 2 HCN (g) ΔΗ 270. 3 kJ / mol

Calculate AH for the reaction NH3 (g) + CH4 (g) → HCN (g) + 3 H2 (g), from the following data. N2 (g) + 3 H2 (g) → 2 NH3 (g) / mol AH 91.8 kJ C (s, graphite) + 2 H2 (g) → CH, (g) - 74. 9 kJ / mol ΔΗ- 2 C (s, graphite) + H2 (g) + N2 (g) → 2 HCN (g) ΔΗ 270. 3 kJ / mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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