Thermodynamics

FIRST LAW

An ideal car engine (or Carnot engine) would be ...

• isovolumetric

  W = 0

• isothermal

  ΔU = 0

• adiabatic

  Q = 0

• isolated

  W = 0; Q = 0

FIRST LAW

Which of these units is not measured in Jules only?

• Internal Energy

  U

• Heat

  Q

• Work

  W

• Entropy

  S

WORK

If work is negative

• Work is being done on the system

• Work is being done by the system

WORK

In which is no work done?

• a bomb calorimeter

• an ideal car engine

• air bodies in the atmosphere

• an isolated system

SECOND LAW

What does the Second Law of Thermodynamics govern?

• The equilibrium of a system

• The total amount of energy in a system

• The direction of movement of a system

• The temperature of a system

SECOND LAW

Which component of a refridgerator does work?

• the evaporator

• the condenser

• expansion valve

• the compressor

SPONTENAITY

A chemical reaction that releases heat is ...

• An endothermic reaction

• An exothermic reaction

SPONTENAITY

Which conditions results in reactions which are spontaneous only at high temperatures?

• energetically +

  entropically +

• energetically -

  entropically -

• energetically -

  entropically +

• energetically +

  entropically -

EQUILIBRIA

How many types of equilibria are recognised?

• one

• two

• three

• four

EQUILIBRIA

In this dynamic equilibrium reaction, which would not be counted in calculating the equilibrium constant K_c:

H₂0(g) + C(s) ↔ CO(g) + H₂(g)

• water

• carbon

• carbon monoxide

• hydrogen