Reaction Rates
Thermochemistry
Equilibrium/ A/B
Electrochemistry
100

3A + B ---> 2C

Which reactants/products are rate(s) of formation?

C

100
study of the energy changes that  accompany physical or chemical changes in matter
What is thermochemistry
100
The Equilibrium Constant
What is Keq
100
losing electrons oxidation says gaining electrons reduction
What is leo says ger
200

3A + B ---> 2C


If Rc = 10 M/s what is Rb?

-5 M/s

200

In a calorimetry experiment what is considered the system and what is considered the surroundings?

System: reaction or element

Surrounding: water + calorimeter

200
If the concentration of HI is 0.5 initially what is it at equilibrium if the equilibrium concentration of I2 is 0.3?

2HI  ---->  H2  +  I2

0.1 M

200

What is the oxidation number of N?


MgO2N2-

0

300

3A + B ---> 2C

Give three different formulas to calculate the overall rate of reaction.


-(1/3)Ra

(-1)Rb

(1/2)Rc

300

What do all of the variables represent in Q=mcAT equation?

q= heat

m = mass

c= specific heat capacity

AT = Tf -Ti in Kelvin

300

Calculate Q to determine the direction of reaction when the concentrations are: [CH4 ]=0.100 M, [CO] = 0.500 M, [H2O] = 0.200 M and [H2 ] = 0.800 M. The equilibrium constant for the reaction below is 5.67

What is Q=12.8 Q>K

300
always undergoes a reduction at the cathode
What is the strongest oxidizing agent
400

What is the order of this rate law?

R=k[a]4[b]

Fifth order

400

When do you combine the mass of water and your system and on which side of your calorimetry equation?

When your system dissolves in the water and it is on the qsys side of the equation.

400

Propanoic acid, CH3CH2COOH, if its Ka is 3.4 x10-5 what is the pH of the solution at the midpoint of a titration with LiOH?

4.47

400
A galvanic cell is an arrangement of two half-cells that can produce electricity spontaneously
What is a galvanic cell
500

3A + B + 2C ---> 2D

What is the initial rate law equation you would use to solve the rate law?

 

R=k[A]x[B]y[C]z

500

In a calorimetry experiment, 5.56 g of sodium chloride are dissolved in 75.0 mL of water at an initial temperature of 24.9°C. The final temperature of the solution is 23.7°C. What is the molar enthalpy of solution of sodium chloride?

What is 3.95KJ

500

Calculate the pH of a 0.010 M solution of ammonia in water when its conjugate acid has a concentration of 0.005 M? Hint: buffer problem

ammonium Ka =1.4x10-10

10.15

500
state the equation for the standard cell potential
What is E° = Er – Er cathode - anode
M
e
n
u