Constants | Periodic TableA calorimeter is an insulated device in which achemical reaction is contained. By measuring thetemperature change, AT, we can calculate theheat released or absorbed during the reaction usingthe following equation:Part Aq= specific heat x mass x ATA calorimeter contains 30.0 mL of water at 14.0 °C. When 1.70 g of X (a substanice with a molar mass of76.0 g/mol) is added, it dissolves via the reactionOr, if the calorimeter has a predetermined heatcapacity, C, the equation becomesX(s) + H20(1)-X(aq)q= C x ATand the temperature of the solution increases to 30.0 CAt constant pressure, the enthalpy change for thereaction, AH, is equal to the heat, gp; that is,Calculate the enthalpy change, AH, for this reaction per male of X.Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g. C)], that densityof water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings.AH = 9pExpress the change in enthalpy in kilojoules per mole to three significant figures.but it is usually expressed per mole of reactant andwith a sign opposite to that of g for thesurroundings. The total internal energy change,AE (sometimes referred to as AU), is the sum ofheat, q, and work done, ur• View Available Hint(s)ανο ΑΣφAE = q+ wkJ/molHowever, at constant volume (as with a bombcalorimeter) w = 0 and so AE= q.AH =SubmitPearsonCopyright © 2021 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions | Contact Us I9 1:37 ne- AP Student.O Elk Grove Unified -O My Profile-ZoomA Results of the chec.My Citationlist 9/2P Pearson Sign InO College BoadConstants | Periodic TableA calorimeter is an insulated device in which achemical reaction is contained. By measuring thetemperature change, AT, we can calculate theheat released or absorbed during the reaction usingthe following equation:Consider the reactionCn HosOu(s) + 1202(g) -→12CO2(x) + 11H2O(1)in which 10.0 g of sucrose, Ci2 H2m011. was burned in a bomb calorimeter with a heat capacity of 7.50kJ/C. The temperature increase inside the calorimeter was found to be 22.0PC Calculate the change ininternal energy. AE, for this reaction per mole of sucroseq= specific heat x mass x ATOr, if the calorimeter has a predetermined heatcapacity, C, the equation becomesExpress the change in internal energy in kilojoules per mole to three significant figures.q=C x AT• View Available Hint(s)At constant pressure, the enthalpy change for thereaction, AH, is equal to the heat, qp, that is,AH = 9,ΔΕ-kJ/molbut it is usually expressed per mole of reactant andwith a sign opposite to that of q for thesurroundings. The total internal energy change,AE (sometimes referred to as AU), is the sum ofheat, q. and work done, w:SubmitPrevious AnswersAE =q+ wX Incorrect; Try Again; 28 attempts remainingHowever, at constant volume (as with a bombcalorimeter) w=0 and so AE = q.Next >Provide FeedbackP PearsonCopyright © 2021 Pearson Education Inc. All rights reserved. | Terms of Use Privacy Policy Permisslons Contact Us |PA 1:37

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Answered: A calorimeter contains 30.0 mL of water…

Chemistry

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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

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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:
Part A
q= specific heat x mass x AT
A calorimeter contains 30.0 mL of water at 14.0 °C. When 1.70 g of X (a substanice with a molar mass of
76.0 g/mol) is added, it dissolves via the reaction
Or, if the calorimeter has a predetermined heat
capacity, C, the equation becomes
X(s) + H20(1)-X(aq)
q= C x AT
and the temperature of the solution increases to 30.0 C
At constant pressure, the enthalpy change for the
reaction, AH, is equal to the heat, gp; that is,
Calculate the enthalpy change, AH, for this reaction per male of X.
Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g. C)], that density
of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the surroundings.
AH = 9p
Express the change in enthalpy in kilojoules per mole to three significant figures.
but it is usually expressed per mole of reactant and
with a sign opposite to that of g for the
surroundings. The total internal energy change,
AE (sometimes referred to as AU), is the sum of
heat, q, and work done, ur
• View Available Hint(s)
ανο ΑΣφ
AE = q+ w
kJ/mol
However, at constant volume (as with a bomb
calorimeter) w = 0 and so AE= q.
AH =
Submit
Pearson
Copyright © 2021 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions | Contact Us I
9 1:37

Transcribed Image Text:ne- AP Student. O Elk Grove Unified - O My Profile-Zoom A Results of the chec. My Citationlist 9/2 P Pearson Sign In O College Boad 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 Cn HosOu(s) + 1202(g) -→12CO2(x) + 11H2O(1) in which 10.0 g of sucrose, Ci2 H2m011. was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/C. The temperature increase inside the calorimeter was found to be 22.0PC 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. q=C x AT • View Available Hint(s) At constant pressure, the enthalpy change for the reaction, AH, is equal to the heat, qp, that is, AH = 9, ΔΕ- kJ/mol but it is usually expressed per mole of reactant and with a sign opposite to that of q for the surroundings. The total internal energy change, AE (sometimes referred to as AU), is the sum of heat, q. and work done, w: Submit Previous Answers AE =q+ w X Incorrect; Try Again; 28 attempts remaining However, at constant volume (as with a bomb calorimeter) w=0 and so AE = q. Next > Provide Feedback P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. | Terms of Use Privacy Policy Permisslons Contact Us | PA 1:37

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