Gen Chem Thermochemistry and Electrochemistry

Question 1

1st law of thermodynamics

Answer 1

change in energy = difference of heat transfer in the system - work done
delta E= Q-W

Question 2

Enthalpy equation

Answer 2

delta H= sum of Hf products - sum of Hf reactants

Question 3

calorimetry equation

Answer 3

Q=mL

Question 4

gibbs free energy equation

Answer 4

delta G= delta H-Tdelta S

Question 5

what conditions are always spontaneous

Answer 5

• H, +S

Question 6

what conditions are never spontaneous

Answer 6

+H, -S

Question 7

what conditions are spontaneous at low temperature

Answer 7

• H, - S

Question 8

what conditions are spontaneous at high temperature

Answer 8

+ H, +S

Question 9

largest - E values indicate what about the reducing agent

Answer 9

strongest reducing agents

Question 10

largest + E values indicate what about the oxidizing agent

Answer 10

strongest oxidizing agents

Question 11

Emf eqn

Answer 11

Emf= E cathode- E Anode

Question 12

are galvanic cells spontaneous or non spontaneous

Answer 12

spontaneous

Question 13

are concentration cells spontaneous or non spontaneous

Answer 13

non-spontaneous

Question 14

what occurs at the anode in an electrochemical cell ?

Answer 14

lose e-, oxidation

Question 15

what occurs at the cathode in an electrochemical cell?

Answer 15

gain e-, reduction

Question 16

Nernst equation

Answer 16

Ecell= Eocell - (RT/nF)(ln Q)

Question 17

how many coloumbs = 1 faraday

Answer 17

96,500 C

Question 18

kelvin to C

Answer 18

1 C= 273.13 K

Question 19

what does a + Eo of a cell mean

Answer 19

the more + the E, the more spontaneous the reaction occurs