Fuels and Energy

Thermochemistry

The relationship between the amount of fuel needed to release a specific amount of energy is explored under _______

Combustion reaction

are means of releasing energy from fuels.

Stoichiometry

is the tool that shows the quantitative relationships among fuels and their products.

is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data.

stoikhein ; metron

In Greek,

______ means element and ______ means measure, so stoichiometry literally translated means the measure of elements.

Chemical Reactions

are frequently written as an equation, using chemical symbols.

Reactants

are displayed on the left side of the equation.

Products

are shown on the right.

Single or double arrow

with the separation of either a ___________ that signifies the direction of the reaction.

Single and double arrow

The significance of ____________ is important when discussing solubility constants.

same ; raising

To balance an equation, it is necessary that there are the ____ number of atoms on the left side of the equation as the right. One can do this by ____ the coefficients.

Stoichiometric coefficient

is the number written in front of atoms, ion and molecules in a chemical reaction to balance the number of each element on both the reactant and product sides of the equation.

balanced ; same

In a _____ reaction, both sides of the equation have the ___ number of elements.

Combustion Reaction

involves the reaction of a material with oxygen to produce oxides of all other elements as products releasing energy in the form of heat during the process. It is commonly known as “burning”.

Fuels

are usually made up of elements that readily reacts with oxygen such as carbon and hydrogen.

Fuel

Oxygen

Heat

There are three components of combustion:

Combustion

The purpose of ______ is to consume fuel efficiently to produce heat.

Air

To achieve complete combustion, it is essential to introduce ___ into the combustion chamber.

Complete combustion

To maximize the efficiency of combustion, it is vital to consume (or burn) all the fuel, which is known as?

Stoichiometry

therefore gives us the quantitative relationships among reactants and products in a given chemical reaction.