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chem ch2
part 2
22
Chemistry
12th Grade
10/28/2012

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Term
in an endothermic reaction, the enthalpy is
Definition
decreasing
Term
in an exothermic reaction, the enthalpy is
Definition
increasing
Term
if the heat term is on the right side, what is happening to the heat and is it exo or endo?
Definition
the heat is being abosrbed and it is endo
Term
if th eheat term is on the left side, what is happening to the heat and is it exo or endo?
Definition
the heat is being released and it is exo
Term
A chemical reaction will favour the side (reactants or products) with
Definition
minimum enthalpy if no other factors are considered.
Term
PCl5(g) Cl2(g) + PCl3(g) H = 92.5 kJ __________thermic and the ___________________ have minimum enthalpy.
Definition
endo and favours reactants because it has minimum enthalpy
Term
in an endo thermic reaction minimum enthalpy favors what side. and if the reactants were mixed, will they remain or form products?
Definition
minimum enthalpy favors reactants and tend to remain as reactnats
Term
When no other factors are considered, a reaction will move in such a way (left or right) in order to achieve a state of ________
Definition
minimum enthalpy
Term
Given the equation: 2NH3(g) + 92.4 kJ N2(g) + 3H2(g)
If only the enthalpy is considered, the (reactant / products) ____________________________
will be favoured at equilibrium.
Definition
reactants
Term
If the reaction : CO(g) + 3H2(g) CH4(g) + H2O(g) + 49.3 kJ
was proceeding to the right, the enthalpy would be _____________________ing. Is this a

favourable change? _____________.
Definition
decreasing. yes
Term
if the reaction is exothermic, what side have minimum enthalpy and the formation of products is or is not favourable?
Definition
products have minimum enthalpy and formation of products is favourable.
Term
if reaction is endothermic, which side have minimum enthalpy? and formation of products is favourable or unfavorable?
Definition
reactants, unfavourable
Term
in an endothermic reaction, are reactants favourable or unfavourable?
Definition
favourable.
Term
the greatest entropy is in the side with the greater or least number of moles
Definition
greater number of moles
Term
enthalpy
Definition
heat content or chemical potential energy
Term
entropy
Definition
disorder
Term
in an endothermic reaction, which have minimum enthalpy, reactants or products?
Definition
reactants
Term
in an exothermic reaction, which have minimum emthalpy? reactants or products
Definition
products
Term
there's a natural tendency toward _____ enthalpy and ______ entropy
Definition
minimum enthalpy and maximum entropy
Term
a process in which entropy increases and ehtaply decreases: completion, equilibrium or no occur
Definition
go to completion
Term
a process in which entropy increases nd enthalpy increases: completion, equilibrium or no occur
Definition
equilibrium
Term
A process in which entropy decreases and enthalpy decreases will: completion, equilibrium or no occur
Definition
equlibrium
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