Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 31, Problem 31.3QAP
Interpretation Introduction
Interpretation:
Thermogravimetric curve is to be determined from the given mass and melting point.
Concept introduction:
Thermogravimetric curve is a plot ofthe percentage of mass and temperature, comprising of a progression of a numbers of steps, acquired by estimating the mass of a sample during heating. It is a strategy used for heat calculation where the mass of a sample is estimated after some time as the temperature changes.
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Calculate AS values for the following reactions by using tabulated Sº values from Appendix C..
(a) C₂H4(9) + H₂(g) = C₂H6(9)
Asº =
J/K
(b) 2 CH₂OH(g) + 3 0₂(g) = 2 CO₂(g) + 4H₂O(g)
AS⁰ =
3/K
(c) 2 PC13(g) + O₂(g) =2 POCI3(9)
AS⁰ =
J/K
(d) N₂04(0) = 2 NO₂(9)
AS⁰ =
J/K
From the following equation with their corresponding equilibrium constants at 298 K,find the Kc of the reaction given below.
For questions 6-8 calculate the ?Hrxn based off of the given data. 6. Find ?Hrxn for S8(s) + 12O2(g) →8SO3(g)Using the thermodynamic below.S8(g) + 8O2(g) →8SO2(g) ?Hrxn= -2374 KJ2SO2(g) + O2(g)→ 2SO3(g) ?Hrxn= -792 KJ
Chapter 31 Solutions
Principles of Instrumental Analysis
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