Cassandra is trying to classify the reaction presented by the graph below and calculate the change in energy, AH for it. 100 80 60 PE MC Endo Exo Graph 1 A+B (kJ) 40 C+D 20 Progress of the reaction She claims that the AH will be +20kJ and the reaction is endothermic. Is her claim correct? If not, find the errors and fix them to give the correct answer. Make sure to show ALL work and give explanations.

Cassandra is trying to classify the reaction presented by the graph below and calculate the change in energy, AH for it. 100 80 60 PE MC Endo Exo Graph 1 A+B (kJ) 40 C+D 20 Progress of the reaction She claims that the AH will be +20kJ and the reaction is endothermic. Is her claim correct? If not, find the errors and fix them to give the correct answer. Make sure to show ALL work and give explanations.

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...

See similar textbooks

Similar questions

How much energy is required to decompose 800 gg of PCl3PCl3, according to the reaction below? The molar mass of PCl3PCl3 is 137.32 g/molg/mol and may be useful.4 PCl3PCl3(g) →→ P4P4(s) + 6 Cl2Cl2(g) ΔH∘rxnΔHrxn∘ = +1207 kJ
please use the photo attached for the information
7. The fermentation reaction of glucose is exothermic, producing 74k3 per mole of glucose. Calculate the change in energy in the fermentation of 50.00 lbs. of glucose. 2 2 CO2 C6H12O6 → C₂H5OH +
Determine the enthalpy of reaction for HCI(g) + NaNO2(s) -> HNO2 (l) + NaCl(s) 2NaCl(s) + H2O(l) → 2HCI(g) + Na2O(s) ∆H ° =-507.1 kJ/mol NO(g) + NO2(g) + Na2O(s)→ 2N2NO2 (s) ∆H ° = -427.0 kJ/mol NO (g) + NO2 (g) -> N2O(g) + O2 (g) ∆H ° =-43.01 kJ/mol 2HNO2 (l) -> N2O (g) + O2 (g) + H2O(l) ∆H ° = +34.02 kJ/mol
Find AHrxn (kJ/mol) for the reaction 2Al(s) + Fe203(s) → Al203(s) + 2Fe(s), given the reactions below: a) Fe(s) → Fe(l), AH = 13.8 kJ/mol b) Al(s) + 1/2FE202 (s) → 1/2A12O3(s) + Fe(l), AH = -118.6 kJ/mol
CO2(g) + H2(g) → CO(g) + H2O(g) AH = 41.2 kJ /mol -rxn When 15g of Carbon Dioxide react with hydrogen gas ___Kj of energy are evolved/absorbed. O 82.4kJ, evolved O14.04kJ, evolved O 82.4kJ, absorbed O 14.04kJ, absorbed
For the following reaction: 2HCI (aq) + Ba(OH)2 (aq) ----> BaCl2 (aq) + H20 (I) AH° = -81.5 kJ Select all of the true statements below. There may or may not be more than one true statement. Do not select any false statements. O The reaction is endothermic. O The temperature of the surroundings will decrease. Heat flows from the surroundings to the system. O If 2 mole of HCl is reacted, 81.5 kJ of heat will be released.
The equation is 4FeS(s) + 702(g ) -> 2Fe2O3(s) + 4SO2(g), the release is 251 kJ a) State whether reaction is exothermic or endothermic b ) Re-write the reaction with energy as a product or reactant (whichever is appropriate) c) Rewrite the reaction with the energy term written separately, to the right. d) Draw and label a potential energy diagram that describes the reaction
Above what temperature (in Kelvin) does the following reaction become nonspontaneous? FeO(s) + CO(g) → CO2(g) + Fe(s) ΔH = -11.0 kJ; ΔS = -17.4 J/K
Compare the TWO reaction energy profiles shown below. (A) Reaction Progress Reaction Progress (a) A chemical reaction is used as the basis of the heat packs that are used for first aid. Which reaction profile, A or B, best represents the enthalpy change for the reaction in this system? Explain the reasons for your choice. Profile (b) Identify the reaction profile (A or B) that represents the progress of the following reaction: 2NO(g) + O₂(g) → 2NO₂(g) ΔΗΘ = -113.14 kJ Profile (c) Calculate the heat energy transferred when when 100.0 g of nitrogen monoxide gas reacts with excess oxygen through the reaction given in part (b). Energy Energy (B)
O Macmillan Learning Calculate the standard enthalpy change for the following reaction at 25 °C. C3H₂(g) + 5O₂(g) → 3 CO₂ (g) + 4H₂O(g) 2 AH values can be found in this table of thermodynamic values. AH rxn = kJ/mol
10