Y12 Chemistry 2017

Unit 3 - Area of study 1

What are the options for energy production?

Online Quizzes

Chapter 1 - Fuels Password: 000 (triple zero)

Experiments

Experiment 1 - Fractional Distillation of Crude Oil

Topics

Fuel choices

Comparison of fossil fuels and Biofuels

Fossil Fuels - coal, crude oil, petroleum gas, coal seam gas.
Fossil fuels are non-renewable fuels that are mined for underground.

Biofuels - biogas, bioethanol and biodiesel

Biofuels are a fuel derived immediately from living matter (Plants, animal waste, ect)

Comparison of the suitability of petrodiesel and biodiesel

Petrodiesel is a non-renewable fossil fuel where as biodiesel is a renewable fuel created from plant and animal matter.

Viscosity

Viscosity is a measure of how easy it is for a fluid to flow due to internal friction. I.e. Honey has a high viscosity.

Obtaining energy from fuels

Combustion of fuels

Combustion of fuels is an exothermic reaction (releases heat) where energy is transformed from stored chemical energy in heat, light and sound energy.

Enthalpy change (ΔH)

The enthalpy change (ΔH) is the amount of heat released or absorbed when a chemical reaction occurs at constant pressure. ΔH = H₍_products₎ - H₍_reactants₎ ΔH is specified per mole of substance as in the balanced chemical equation for the reaction.

Writing of balanced thermochemical equations

The Universal Gas Equation (PV=nRT) and Standard Laboratory Conditions (SLC)

PV = nRT SLC = 25 °C and 100 kPa STP = 0 °C and 100 kPa 0K = -273.15 °C

Stoichiometry

Stoichiometry is the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
Stoichiometry Calculator

Specific heat capacity

Specific heat capacity is the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).

Galvanic cells as a source of energy

Redox reactions

Redox reactions are An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. An oxidation-reductionreaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

Writing of balanced half-equations

Galvanic cells

Battery - A galvanic cell, or voltaic cell, named after Luigi Galvani, or Alessandro Volta respectively, is an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.