Real-life heat Capacity is temperature dependent. Consider the formation of water vapor H2(g)+( 02(g) → H20(g) The heat capacities Cp(T) for each of the reactants and the product is given by 2 where the constants a, b and c depend on the substance. The above equation is alid from 298 K to 2,000 K. The units of a, band c are .? Calculate AH given (298 K)=-60kCal. Express your answers in terms of a, b, c for the reactants and roducts (aH2, bH2 --) Answers choices for part b) - AH (T) = -60kCal AH (T) = -60kCal + (aH,0 – aH, - ao.) (T – 298K) + 4 (b#,0 – bí, - bo.) (Tª – 298 K²) – (CH,0 – CH, - co.) ( - ) AH (T) = (a1,0 - a, - j40,) (T – 298K) +(b,0 – bn, – bo,) (7ª – 298* K²) – (cH,0 - CH, - co.) (+ - AK) 208K AH (T) = -60kCal – (aH,0 – aH, - tao.) (T – 298K) – (bH,0 – ba, - bo.) (Tª – 298° K²) + (CH,0 – CH, - co.) ( - )
Real-life heat Capacity is temperature dependent. Consider the formation of water vapor H2(g)+( 02(g) → H20(g) The heat capacities Cp(T) for each of the reactants and the product is given by 2 where the constants a, b and c depend on the substance. The above equation is alid from 298 K to 2,000 K. The units of a, band c are .? Calculate AH given (298 K)=-60kCal. Express your answers in terms of a, b, c for the reactants and roducts (aH2, bH2 --) Answers choices for part b) - AH (T) = -60kCal AH (T) = -60kCal + (aH,0 – aH, - ao.) (T – 298K) + 4 (b#,0 – bí, - bo.) (Tª – 298 K²) – (CH,0 – CH, - co.) ( - ) AH (T) = (a1,0 - a, - j40,) (T – 298K) +(b,0 – bn, – bo,) (7ª – 298* K²) – (cH,0 - CH, - co.) (+ - AK) 208K AH (T) = -60kCal – (aH,0 – aH, - tao.) (T – 298K) – (bH,0 – ba, - bo.) (Tª – 298° K²) + (CH,0 – CH, - co.) ( - )
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Transcribed Image Text:1. Real-life heat Capacity is temperature dependent. Consider the formation of water vapor H2(g)+(
2)O2(g) → H20(g) The heat capacities Cp(T) for each of the reactants and the product is given by
Cp=a+bT+CT 2,
valid from 298 K to 2,000 K.
2 where the constants a, b and c depend on the substance. The above equation is
a. The units of a, b and c are.?
b. Calculate AH given (298 K)=-60kCal. Express your answers in terms of a, b, c for the reactants and
products (aH2, bH2 --)
(Answers choices for part b)
AH (T) = -60kCal
O AH (T) = -60kCal + (an,0 – aH, – tao,) (T – 298K) + + (bH,0 – bH, – bo.) (T² – 298 K²) – (cH,0 – CH, - co.) (÷ - )
AH (T) = (a1,0 – a, – ž40,) (T – 298K) + (b#,0 – bn, – bo,) (Tª – 298* K²) – (cH,0 – CH, – co,) (+ - K)
Ο ΔΗ (T)
= -60kCal – (an,0 – an, - ļa0.) (T – 298K) – |(bH,0 – bH, – įbo.) (T² – 298 K²) + (cH,0 – CH, - co.) ( - )
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