Answered: Write the thermochemical equation of…

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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Please help me with my hw. I have troubles solving it. Hope you can help me. THERMOCHEMICAL EQUATIONS These equations provide for the following information: The balanced chemical equation Moles of substances and their state of matter. Sign and magnitude of the energy change which is proportional to the amount of substance reacted or produced. Example: Combustion of glucose from the equation C6H12O6 + O2  CO2 + H2O ΔHᵒ= -2805 kJ/mole (negative sign indicates an exothermic reaction) Thermochemical equation: C6H12O6(s) + 6 O2  6 CO2(g) + 6 H20(l) + 2805 KJ Decomposition of ammonia from the equation NH3  H2 + N2 ΔHᵒ= 29.61 kJ/mole (positive sign indicates an endothermic reaction as it requires amount of heat to decompose ammonia) Thermochemical equation: NH3(g) + 29.61 KJ  3/2 H2(g) + 1/2 N2(g) Activity: Show complete solution following these steps These equations provide for the following information: The balanced chemical equation Moles of substances and their state of matter. Sign and magnitude of the energy change which is proportional to the amount of substance reacted or produced. 1. Write the thermochemical equation of one mole of nitrogen gas, N2 reacts with oxygen gas, O2, two moles of nitric oxide is formed. In the process, 180.5 kJ of heat is required. 2. Decomposition of CaCO3(s) into CaO(s) and CO2(g), ΔHᵒ 25ᵒ = 178 kJ

Definition Definition Substance that constitutes everything in the universe. Matter consists of atoms, which are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction: solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).

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