enthalpy and entropy

Question 1

activation energy

Answer 1

the minimum energy required for a reaction to take place

Question 2

standard conditions

Answer 2

100kpa 298k

Question 3

Average bond enthalpy equation

Answer 3

Reactant-product

Question 4

Q=

Answer 4

Mct

Question 5

Delta h=

Answer 5

Q/mol

Question 6

Enthalpy change of formation

Answer 6

Change in enthalpy when one mol of a substance in the standard state is formed from its pure elements under the same conditions

Question 7

Enthalpy change of combustion

Answer 7

Enthalpy change when one mol of a substance is combusted completely in oxygen under standard conditions all reac and prod in their standard state

Question 8

Enthalpy change of neutralisation

Answer 8

enthalpy change when solutions of an acid and alkali react together under standard conditions to produce 1 mol of water

Question 9

Enthalpy unit

Answer 9

Kjmol-1

Question 10

Entropy unit

Answer 10

JK-1 mol-1

Question 11

Entropy

Answer 11

Measure of dispersal of energy in a system the more disordered a system the higher the entropy

Question 12

Entropy change equation

Answer 12

Products-reactants

Question 13

Gibbs equation

Answer 13

DG=DH-TDS

Question 14

What does Dg need to be for reaction to be feasible

Answer 14

Negative