Cheese exam 1 Flashcards
What is the octet rule?
Which atoms are exempted from the octet rule?
Sigma and pi bonds
Single bond = 1π
Double bond = 1π +1π
Triple bond = 1π + 2πΏ
What is molality?
molality=(mol solute)/(kg solvent)
What is i?
Boiling point Elevation Equation
ΞT_b=im(k_bp)
If the change in deltaT_b is needed to convert to Celsius..
add 100 to deltaT_b
Henryβs Law Equation
C=kP ; k is a constant and P is pressure
Freezing point depression equation
delta(T_f) = im(k_f)
The i of a non-electrolyte is
1
molar mass
MM = mass / mol
Molarity Equation
Molarity (M) = moles of solute (n) / L of solution
percent by mass
22.3% = (22.3 g solute)/(100 g of solution)
If a solid is IONIC -> will have polar bond β> dissolve in polar solvent
If a solid is COVALENT -> will have NP bond -> dissolve in NP solvent
Polar Bond examples
O-H
Non polar bond examples
C-H
The rate law is equal to what step?
The slow step
The rate law only includes what?
reactants
amt/t = con/t = ___ rate law
integrated rate law
Integrated rate law second order
1/[A] = kt + 1/[A]o
Second order units
M^-1 s^-1
unit for order reaction equation
units = M^1-n time^-1
0 order M^1s^-1
1 order M^0 s^-1 =s^-1
2 order M^-1s^-1
3 order M^-2 s^-1
What is Kc (equilibrium constant)?
the ratio of the equilibrium concentrations of products over the equilibrium concentrations of reactants each raised to the power of their stoichiometric coefficients
no solids or liquids
How to know if a graph is showing an exothermic reaction?
It is showing an exothermic reaction if the potential energy is higher on the reactants side than the products side.
Q and K relationship
Q > k reaction will go to the left
Q < k reaction will go to the right
Kp formula
Kp = kc(RT)^(delta)n
where R is 0.0821 Latm/molk
(delta) n = mol of prod - mol of reactants
