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Solved: The magnitudes (but not the signs) of the standard

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 18.108 Chapter 18

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 18.108

The magnitudes (but not the signs) of the standard reduction potentials of two metals X and Y are Y21 1 2e2 Y 0 E0 5 0.34 V X21 1 2e2 X 0 E0 5 0.25 V where the 0 0 notation denotes that only the magnitude (but not the sign) of the E value is shown. When the half-cells of X and Y are connected, electrons flow from X to Y. When X is connected to a SHE, electrons flow from X to SHE. (a) Are the E values of the half-reactions positive or negative? (b) What is the standard emf of a cell made up of X and Y?

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Principles of Chemistry: A molecular approach Chapter 2 Imaging and moving  Gerd, Binning and Heinrich Roher -- experiment with electric current over a flat metal surface = tunneling current to view atoms  Law of conservation of matter o Matter can neither created or destroyed  Total reactant = total product  Dalton - English chemist o Atomic theory of matter o Atoms are small, discrete, indivisible pieces of matter o Elements are made up of atoms o All atoms are the same  Law of definite proportions o Same thing every time in same proportions  Example: NaCl is always a 1:1 proportions  Law of multiple proportions o 2 elements A and X can form different compounds when made in different proportions  Ex: H2O and H2O2 or CO and CO2 Discovery of E-  Thomson's charge to mass experiments with cathode rays o He believed these particles were building blocks of matter o Cathode ray particles = E- Atoms  JJ Thomas and the Plum pudding model o Atoms are composed of a positive cloud of matter which e- are embedded in o This structure does not hold up today  Rutherford o Gold foil experiment o Led to Discovery of the nucleus o Beam would go straight through the solid but some particles would veer off to the side  It w

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Chapter 18, Problem 18.108 is Solved
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Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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Solved: The magnitudes (but not the signs) of the standard