Exothermic
Is an exothermic reaction a gain or a loss in energy to the system?
Loss
Is an endothermic reaction a loss or a gain to the surroundings?
Loss
What are the variables called in q=mc△ T?
Mass, specific heat capacity, change in temperature, quantity of heat
△ Euniverse =
0
Why is determining the limiting reactant important?
To figure out which substance will run out first in the reaction
Is exothermic negative or positive?
negative
What side of a reaction is endothermic on in a balanced chemical equation?
Left
△ H=q/n
change in heat, moles, quantity of heat
-△ Esystems = ?surroundings
+△ E
What is the molar mass of hydroxic acid?
18.02
Do exothermic reactants have lower or higher potential energy than their products?
Lower
Do endothermic reactants have lower or higher potential energy than their products?
Higher
△ H° indicates
SATP conditions
First law of thermodynamics
Energy cannot be created or destroyed
How do you determine the c of an unknown product placed in water?
Find the q for water and reverse the symbol
What does △ Hcomb, △ Hdecomp and △ Hrxn mean?
Enthalpy change in a combination reaction, decomposition reaction and non specific reaction
What side is the energy on in an exothermic reaction?
Right
Why is a styrofoam cup used in calorimetry?
Because of its isolation properties
What does △ H° f mean and what is it used for?
Enthalpy of formation and to calculate TV
The 4 ways to demonstrate enthalpy change
Thermochemical equation with △ H Values
Thermochemical equation with Energy Terms
Molar enthalpies of Reaction
Potential energy Diagrams
Steps for Stoichiometry and limiting reactant
1. Write a balanced chemical equation
2. Convert mass to mole
3. Find limiting reactant
4. Use mole ratio
5. Convert moles to mass