Enthalpy Changes

Where is the subcooled zone?

• A

• B

• C

Tags

NGSS.HS-PS3-4

Where is the superheated zone?

• A

• B

• C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The blue line on the enthalpy chart is where the refrigerant is:

• saturated liquid

• saturated vapour

Tags

NGSS.HS-PS3-4

The green line on the enthalpy chart is where the refrigerant is:

• saturated liquid

• saturated vapour

Tags

NGSS.HS-PS3-4

What component of the refrigeration cycle is located between point C and D?

• RMD

• condenser

• evaporator

• compressor

Tags

NGSS.HS-PS3-4

The section of the graph indicated by C is called the:

• refrigeration effect

• compressor effect

• condenser effect

Tags

NGSS.HS-PS3-4

The section of the graph indicated by B is called the:

• refrigeration effect

• compressor effect

• condenser effect

Tags

NGSS.HS-PS3-4

ΔH means:

• temperature

• calorimetry

• enthalpy

• syntropy

Tags

NGSS.HS-PS1-4

A positive ΔH means that:

• In order for the reaction to happen, heat must be input. It is exothermic

• In order for the reaction to happen, heat must be input. It is endothermic.

• When the reaction happens, heat is released. It is exothermic

• When the reaction happens, heat is released. It is endothermic

Is the following exothermic or endothermic?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1