14 Questions
What is the fundamental principle of Hess's Law?
The heat change of a reaction depends only on the initial and final states of a reaction
What is the process of converting straight chain compounds to ring compounds?
Dehydrocyclisation
What is the by-product of the electrolysis of water?
Oxygen and hydrogen
What is the purpose of improving the octane number of a fuel?
To improve the fuel's combustion efficiency
What is the primary goal of catalytic cracking?
To produce smaller molecules with higher octane numbers
What is the main reactant in the steam reforming process?
Methane
What is the product of the reaction CO + H₂O →?
CO₂ + H₂
What is the sign of ∆H for an exothermic reaction?
Negative
What is the octane number a measure of?
The tendency of a fuel to resist auto-ignition
What is the unit of bond energy?
Kilojoules per mole
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, but can change from one form to another
What is the heat of combustion of a substance?
The heat change when one mole of the substance is completely burned in excess oxygen
What is the kilogram calorific value of a fuel?
The heat energy produced per kilogram of fuel
What is the heat of formation of a substance?
The heat change when one mole of the substance is formed from its elements in their standard states
Test your understanding of exothermic and endothermic reactions, including the heat of reaction, auto-ignition, and octane number. Review the concepts of thermodynamics and their applications in car engines.
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