equilibrium
give your best definition of dynamic equilibrium
rates of forward/reverse reactions are equal, reaction does NOT stop, systems spontaneously move towards equilibrium
in a balanced chemical reaction where can you find the products and reactants
reactants are on the LEFT while products are on the RIGHT
what is the name of NaCl
sodium chloride
in le chatelier's principle, three main types of changes can disturb a chemical equilibrium.
add or removal of chemical, change in temperature, change in pressure
what is the formula for an equilibrium constant expression?
K = products/reactants
Balance the following equation: Mg+O2→MgO
2Mg+O2→2MgO
what is the name of HBr
hydrobromic acid
in your own words what is le chatelier's principle
when a chemical system at equilibrium is disturbed, it returns to equilibrium by counteracting the distance
when writing an equilibrium constant expression, what type of reactants should not be included?
solids and pure liquids
Balance the combustion reaction of propane: C3H8+O2→CO2+H2O
C3H8+5O2→3CO2+4H2O
what is the name of HNO3
nitric acid
in a le chatelier's principle problem involving a change in pressure, you need to determine the ______ before predicting the shift in equilibrium.
number of moles of gas
Write the equilibrium expression for: A+B⇌C+D
K = [C][D]/[A][B]
Balance the following redox reaction: Fe+H2O→Fe3O4+H2
3Fe+4H2O→Fe3O4+4H2
what is the name of K3PO4
potassium phosphate
adding a product to a saturated solution, will shift the equilibrium towards ...
reactants
Given the equilibrium reaction, H2(g)+I2(g)⇌2HI(g), what is the K expression?
K = [HI]^2/[H2][I2]
Balance the following double displacement reaction: Na2S+BaCl2→NaCl+BaS
Na2S+BaCl2→2NaCl+BaS
the chemical formula is CrO3, what is the name?
chromium (VI) oxide
to determine which side heat is on in a temperature disturbance under le chatelier’s principle, you must know if a reaction is endothermic or exothermic. this can be identified by the sign of ΔH. a positive ΔH means heat is on the ______ side, while a negative ΔH places heat on the ______ side.
reactants (for endothermic) and products (for exothermic)?