For which of the following processes is the equation AS = qrev /T valid? 4. any reversible expansion of an ideal gas. isothermal irreversible compression of a non-ideal gas. constant pressure heating of a liquid. isothermal vaporization of a liquid. isothermal sublimation of a solid to a non-ideal vapor. 1. 2. 3. 4. 5. 1 & 3 only B) 1, 4 & 5 only E) 4 & 5 only C) 2, 3 & 4 only A) D) 2, 4 & 5 only

For which of the following processes is the equation AS = qrev /T valid? 4. any reversible expansion of an ideal gas. isothermal irreversible compression of a non-ideal gas. constant pressure heating of a liquid. isothermal vaporization of a liquid. isothermal sublimation of a solid to a non-ideal vapor. 1. 2. 3. 4. 5. 1 & 3 only B) 1, 4 & 5 only E) 4 & 5 only C) 2, 3 & 4 only A) D) 2, 4 & 5 only

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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When gasoline burns in an automobile engine, the heat released (312 J) causes the products CO2 and H2O to expand, which pushes the pistons outward. Excess heat is removed by the car’s cooling system. If the work associated with the expanding gases is equal to 441 J, how much is the change in internal energy of the piston? If answer is negative, include sign, e. g. -1000. No need to add positive sign if answer is positive, e.g. 1000.
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DATA AND CALCULATIONS Reaction 2 Reaction 3 Reaction 1 (no solid NaoH) 2154 100. 154 a8.5 Mass of NaOH solid 100 t00.061 34.8 d1.9 Mass (total) of solution 6. 9. 6. °C 33.3 °C Final temperature, T2 °C av. °C al. 7 Initial temperature, T °C °C CALCULATIONS temperature change, AT 6.7 °C la. 9 °C I1.6 °C kJ -5395.489 k-4848.8 -ag04.913 a804.913 k- $395.499 KJ|-4848.8 Heat, q kJ ΔΗ k) Moles of NaOH 0.054 mol 0.0515 0.05 mol mol AH/mol -51,942.83k)/mol-104 96.70kJ/mol-96 976 kJ/mol Experimental value kJ/mol Accepted value k)/mol Percent error %
27 of 42 (> Constants | Periodic Table A calorimeter is an insulated device in which a chemical reaction is contained. By measuring the temperature change, AT, we can calculate the heat released or absorbed during the reaction using the following equation: Consider the reaction C12 H22O11 (s) + 1202(g)-12CO2(g) + 11H2O(1) in which 10.0 g of sucrose, C12 H22011, was bumed in a bomb calorimeter with a heat capacity of 7.50 kJ/C. The temperature increase inside the calorimeter was found to be 22.0°C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. q= specific heat x mass x AT Or, if the calorimeter has a predetermined heat capacity, C, the equation becomes Express the change in internal energy in kilojoules per mole to three significant figures. 9=C x AT • View Available Hint(s) At constant pressure, the enthalpy change for the reaction, AH, is equal to the heat, gp, that is, V ΑΣφ ? AH= q, AE = kJ/mol but it is usualy expressed per mole of reactant and…
Given NO2 (g) N2O4 (g) and AH = -58.0 kJ %3D What is the response when the system temperature changes from 250 K to 500 K? A the system initiates cooling until original temperature is regained shifts to the left, making more reactants shifts to the right, making more products D nothing
2. An ideal gas in thermal contact with the surroundings is cooled in an irreversible process at constant pressure. Are 4Ssystem, ASsurroundings and 4Stotal positive, negative or zero? (a) negative, negative, negative (b) negative, positive, negative (c) negative, positive, positive (d) positive, positive, positive
Given the following line of best fit, determine the values for enthalpy and entropy for this reaction. y = -14406x + 45.076 ΔΗ 1 R T Remember: InK sp AS R Part A - Solve for AH. Report your answer in kJ/mol. ? Submit Request Answer Part B - Solve for AS. Report your answer in J/ mol K | ? Submit Request Answer
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A ballon of helium gas lost 36.4kJ of heat while it was raising up, simultaneously, the helium gas expanded from 64.0 L to 80.0 L against 563 mmHg pressure. Calculate the change in internal energy of helium gas in kJ Select one: а. -33.6 b. -37.6 C. -39.6 d. -35.6 e. -31.6
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