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Which reaction happens in an ice pack?
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
After an exothermic reaction
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
The content of heat of a system is
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
Which reaction is exothermic?
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
When a reaction produces heat, the heat flows
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
If the H(reactants) = 340 J and H(products) = 200 J, what is the enthalpy (heat) of the reaction?
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
which expression is correct?
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
what is the enthalpy (heat) of the reaction 2C₂H₂(g) + 5O₂(g) ⟶ 4CO₂(g) + 2H₂O(g) +2511.6 kJ ?
universe = system + surroundings
endothermic
enthalpy
from the system to the surroundings
-2511.6 kJ
the reactants have more enthalpy than the products
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
-140 J
Check it!