PHYSICAL CHEMISTRY-STUDENT SOLN.MAN.
2nd Edition
ISBN: 9781285074788
Author: Ball
Publisher: CENGAGE L
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Chapter 20, Problem 20.49E
Interpretation Introduction
Interpretation:
The validation corresponding to the fact that the given set of three equations must satisfy the law of conservation of matter for the stoichiometry of the general reaction is to be stated.
Concept introduction:
The law of conservation of matter states that “for any system which is closed to all the transfers of matter and energy, the mass of that system remains constant over time or mass cannot be changed for that system”.
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9. OA. Rank the expected boiling points of the compounds shown below from highest to lowest. Place your answer
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OH
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There is an instrument in Johnson 334 that measures total-reflectance x-ray fluorescence (TXRF) to do elemental analysis (i.e., determine what elements are present in a sample). A researcher is preparing a to measure calcium content in a series of well water samples by TXRF with an internal standard of vanadium (atomic symbol: V). She has prepared a series of standard solutions to ensure a linear instrument response over the expected Ca concentration range of 40-80 ppm. The concentrations of Ca and V (ppm) and the instrument response (peak area, arbitrary units) are shown below. Also included is a sample spectrum. Equation 1 describes the response factor, K, relating the analyte signal (SA) and the standard signal (SIS) to their respective concentrations (CA and CIS).
Ca, ppm
V, ppm
SCa, arb. units
SV, arb. units
20.0
10.0
14375.11
14261.02
40.0
10.0
36182.15
17997.10
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10.0
39275.74
12988.01
80.0
10.0
57530.75
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100.0…
A mixture of 0.568 M H₂O, 0.438 M Cl₂O, and 0.710 M HClO are enclosed in a vessel at 25 °C.
H₂O(g) + C₁₂O(g) = 2 HOCl(g)
K = 0.0900 at 25°C
с
Calculate the equilibrium concentrations of each gas at 25 °C.
[H₂O]=
[C₁₂O]=
[HOCI]=
M
Σ
M
Chapter 20 Solutions
PHYSICAL CHEMISTRY-STUDENT SOLN.MAN.
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