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A metal forms the fluoride MF3. Electrolysis of the molten

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

Solution for problem 122E 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 122E

A metal forms the fluoride MF3. Electrolysis of the molten fluoride by a current of 3.86 A for 16.2 minutes deposits 1.25 g of the metal. Calculate the molar mass of the metal.

Step-by-Step Solution:
Step 1 of 3

Continued Chapter 2 Empirical and Molecular Formula Molecular formula- chemical formula of a substance (ex. C6H12O6) Empirical- simplest whole number (ex. CH2O) Types of Compounds Ionic Compound: - Cation and Anion - Metal and Nonmetal Molecular or Covalent Compound: - Nonmetal and Nonmetal - Ends in H Acid Compounds: - Chemical formula starts with H - Ex. of strong acids- HCl, HBr, HNo3, H2SO4, HI, HClO4 Base/Basic Compounds: - Metal and Hydroxide - (OH) is an alcohol when attached to a nonmetal Naming Ionic- known cation charge, unknown cation charge (transition metals)  known cation charge- element name + ion; anion- element name + -ide ending  unknown cation- element + ion (roman numeral); anion- element name + -ide ending Molecular- metal and nonmetals  since there aren’t any ions, you need to designate the # of elements  mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca  1 element- name of element, if only 1 no mono prefix is required  2 ndelement- name of element with –ide ending, must designate how many even if 1 Acidic Compound- recognize acids by chemical formula starting with H  two types: with and without oxygen  WITHOUT- start name with hydro- anion name and ending with –ic  WITH- determine polyatomic ion -if ending is –ate change to –ic ending then add acid -if ending is –ite change to –ous ending then add acid Atomic Mass

Step 2 of 3

Chapter 18, Problem 122E is Solved
Step 3 of 3

Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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A metal forms the fluoride MF3. Electrolysis of the molten