Electrochemistry
key terms in chapter 9
- Enthalpy Change: Heat given off or absorbed during a reaction at constant pressure.
- Exothermic: Gives off heat from system to surroundings.
- Endothermic: Absorbs heat from the surrounding to the system.
- Specific Heat Capacity: Amount of heat required to raise temperature of 1 gram of a substance by 1K/1℃.
- Heat Capacity: Amount of heat required to raise the temperature of a given quantity of substance by 1K/1℃.
- Calorimeter: Device used to measure the heat released (or absorbed) by a physical or chemical process.
- Lattice Energy: Energy change when 1 mole of solid ionic compound is formed from its’ gaseous ions.
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Faraday's Laws Of Electrolysis.
One mole of electric charge (96,500 coulombs), when passed through a cell, will discharge half a mole of a divalent metal ion such as Cu2+. This relation was first formulated by Faraday in 1832 in the form of two laws of electrolysis:The weights of substances...
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Writing Free Radical Substitution Mechanism
← Back to Alkanes When writing mechanisms: It is a good practice to write the name of the mechanism whether or not the question asks for it. You just need to show the series of equations/ arrows. There is no need for descriptions i.e. the...
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Ideal Gas Laws
Basic Assumptions of the Kinetic Theory (for ideal gases) • * Gas consists of particles of negligible volume. • * Particles exert no attractive forces on each other. • Particles are in continuous random motion. • The collisions between particles...
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Thermochemistry : 9.3 Born-haber Cycle
First Ionization Energy (IE1)Energy required for 1 mol of gaseous atom to lose 1 mol of electrons. Affinity Electron (EA) Energy change that occurs when 1 mol of gaseous atom gains 1 mol of electrons. Lattice EnergyEnergy change when 1 mol of solid...
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Thermochemistry : 9.2 Hess Law
Hess's Law of Heat Summation When reactants are converted to products, the change in enthalpy is the same whether the reaction take step in one step or in a series of step. ΔH1 =ΔH2 + ΔH3 Application Using Hess's...
Electrochemistry