General Equilibrium
What is a chemical reaction in which the forward and reverse reactions are at equal rates?
equilibrium
If you add more reactants which way does equilibrium shift?
towards products
What does the symbol ⇌ mean in a chemical equation?
reversible
If you remove reactants which way does equilibrium shift?
towards reactants
When do you need an ICE table?
What is when equilibrium concentrations are unknown
If kc is greater than 1, what does that mean?
products are favored
In an equilibrium expression, what do you exclude?
solids and liquids
If you increase pressure what is important in determining the direction of equilibrium?
number of moles
Initial concentrations for the reactant is 1.00 and for the product is 0. What will be the Change?
-x and +x
write them as exponents
If you change temperature what is important in determining the direction equilibrium will shift?
exothermic or endothermic
What do we solve for in ICE table?
equilibrium concentrations
What is the difference between Q and Kc?
Q is at any given moment, Kc is during equilibrium
Balance the equation CH4+O2→CO2+H2O
1, 2, 1, 2
What are the 3 stresses?
concentration, temperature, pressure
If the reactant has a greater value, where does it shift?
to the right (products)
Steps in writing the Kc expression
1. identify reactants and products
2. put products on numerator and reactants on denominator3. write coefficients as exponents