Intro to Thermodynamics
It is the study of chemical and physical alterations that result in energy alterations.
What is Thermochemistry?
The thermal energy necessary to alter by 1oC or by 1K of the temperature by 1 gram.
What is specific heat capacity?
The sum of is represented by this symbol, stemming from the Greek alphabet.
What is Σ or sigma?
A system decreases in energy by 235 KJ/mol, by consequence surroundings _________.
What is an increase by 235 KJ/mol?
Is the general equation to find ΔH from standard enthalpy of formation.
What is ΔH = ΣnΔHf(products) - ΣnΔHf(reactants)?
A law that states that energy cannot be constructed from nothing nor can it be destroyed into nothing. Energy can only change into another form of energy.
The First Law of Thermodynamics
mcΔT is the equation to commonly used to find this in thermochemistry related problems.
What is q or quantity of heat transfer?
ΔHmelt commonly refers to the transfer of energy from this physical form to another physical form.
What are solid to liquid?
ΔH can be determined through the intermediate reactions and their related ΔHs.
What is Hess's Law?
What is KJ/mol?
When the system loses energy, the surroundings by consequence...
What is gains energy?
Water is known to have a specific heat capacity that is _______ than air.
What is greater than?
The measure of energy that contains bonds.
What is bond energy?
Is the ΔH combination for a reaction of the two intermediate reactions of -112 KJ/mol and -125 KJmol.
What is -237 KJ/mol?
The energy is _____ energy in chemical bonds for standard enthalpy of formation.
What is stored energy?
A system by which no energy or matter can leave.
What is an isolated system?
When solving for 'q', we are finding the heat transfer of the _______.
What is the solution?
The energy necessary to separate the chemical bonds held between atoms.
What is bond dissociation energy?
True or false. In intermediate reactions in Hess's Law, compounds can be cancelled out if they are the same molecule but in different states (e.g. liquid and gas).
What is false?
Formation reaction of NaBr(s).
What is Na(s) + 1/2Br2(l) -> NaBr(s)?
In potential energy diagrams, when reactants begin with more energy than the products.
What is an exothermic reaction?
-Qrxn/moles is commonly used to find this important part of a chemical reaction.
What is ΔH or change in enthalpy?
AB + C2--> AC + BC, where A-B bond dissociation energy is 22 KJ/mol, C-C is 13 KJ/mol, A-C is 12 KJ/mol and B-C is 4 KJ/mol gives this ΔH.
What is ΔH = 19 KJ/mol?
Intermediate reactions should _____ to form the desired equation.
What is add?
Is the ΔHf of Aluminum solid.
What is 0.0 KJ/mol ΔHf?