Drawing Enthalpy Diagrams and Determining the sign of AH FOLLOW-UP PROBLEM 6.2 this problem When 0.8 mol of nitroglycerine forms, it absorbs 4.576 x 103 kJ of heat. 3 CO2(g) + 5/2 H20(g) + 1/4 O2(g) + 3/2 N2(g) → C3H5(NO3)3(/) HINTS Is the reaction exothermic or endothermic? O exothermic O endothermic Getting Started I'm Stuck Which enthalpy diagram best describes this reaction? Reactants Products AH =- Exothermic AH = + Endothermic Products Reactants (a) (b) O a O b Enthalpy, H Enthalpy, H

Drawing Enthalpy Diagrams and Determining the sign of AH FOLLOW-UP PROBLEM 6.2 this problem When 0.8 mol of nitroglycerine forms, it absorbs 4.576 x 103 kJ of heat. 3 CO2(g) + 5/2 H20(g) + 1/4 O2(g) + 3/2 N2(g) → C3H5(NO3)3(/) HINTS Is the reaction exothermic or endothermic? O exothermic O endothermic Getting Started I'm Stuck Which enthalpy diagram best describes this reaction? Reactants Products AH =- Exothermic AH = + Endothermic Products Reactants (a) (b) O a O b Enthalpy, H Enthalpy, H

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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In reaction 2, if we had used 4 grams of NaOH instead of 2 grams, would the heat gained by the solution [#6] have been larger, smaller or the same? Briefly explain.
A Moving to another question will save this response. Question 2 "A new element (Rr) has been synthesized and its properties analyzed. When 0.132g of RrO (s) is added to 166g of water at 24° Cin a coffee cup calorimeter, the following reaction occurs. RrO(s) + H 20(1) – Rr(OH) 2 (aq) AH = -74.8kJ/mol Given the molar mass for RrO is 62g/mol calculate the following moles of Rro round answer to 4 decimal places omit trailing zeroes 9 rxn in joules round answer to the nearest whole number 9 water in joules round answer to the nearest whole number Final temperature round answer to 1 decimal place omit trailing zeroes A Moving to another question will save this response. Chip
Question 6 Which of the following graph represents the change in the Potential Energy (PE) of the particles in the system when the substances undergoes the change corresponding to path I? PE с A D B Pressure (atm) A 10³ 10² 10¹ P 10-1 10-² 10-3 Т IV PE 20 ||| || 40 B C PE Т TREF 60 Temperature (K) 80 Т 100 PE D Т
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Question 7 of 8 Submit What is the change in enthalpy in kilojoules when 3.24 g of CH:OH gas is completely reacted according to the following reaction? CH.OH(g) – CH:(g) + O2(g) AH = 252.8 kJ STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 4.00 x 10-4 0.001 2 25.6 0.101 16.05 32.05 12.8 252.8 6.022 x 1023 3.24 1 1000 32.00 7.80 x 10-4 mol CH4 g O2 mol CH:OH g CH. kJ mol O2 J g CH:OH
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CH3OH(g) CO(g) + 2 H2(g) H = +90.7 kJ (a) Is the reaction exothermic or endothermic? exothermic endothermic (b) Calculate the amount of heat transferred when 45.0 g of CH3OH(g) are decomposed by this reaction at constant pressure.H = ____kJ(c) If the enthalpy change is 18.0 kJ, how many grams of hydrogen gas are produced?____g(d) How many kilojoules of heat are released when 11.5 g of CO(g) reacts completely with H2(g) to form CH3OH(g) at constant pressure?H = ____kJ(e) Calculate E when 750.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K _____kJ HopHelpCh5N1
Find the AH (in kilojoules) for the reaction below, given the following reactions and subsequent AH values: (Write your answer in 1 decimal place without the unit). N2(g) + 202(g) – 2NO 2(g) N2(g) + 3H2(g) 2NH3(g) AH = -115 kJ 2NH3(g) + 4H20(1) → 2NO2(g) + 7H2(g) AH = -142.5 kJ H20(1) H2(g) + 1/20 2(g) AH = -43.7 kJ
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35 of 35 > Macmillan Learning When 0.794 g of sodium metal is added to an excess of hydrochloric acid, 8250 J of heat are produced. What is the enthalpy of the reaction as written? 2 Na(s) + 2HCl(aq) Enthalpy of reaction: 2 NaCl(aq) + H₂(g) kJ
10:11 ull 5G Question 14 of 15 Submit What is the change in enthalpy in kilojoules when 3.24 g of CH;OH gas is completely reacted according to the following reaction? CH;OH(g) → 2 CHa(g) + O2(g) AH = 252.8 kJ X STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 7.80 x 10-4 2 16.05 mol O2 6.022 x 1023 12.8 J 32.00 0.101 mol CH,OH 1000 3.24 mol CH. 0.001 252.8 g CH,OH 32.05 4.00 x 10-4 g CH. 1 25.6 kJ Tap here or pull up for additional resources