Enthalpy of Formation

What is the capital of France?

• Paris

• London

• Berlin

• Madrid

What will ΔH be if there is 1 mole of oxygen? 4Fe(s) + 3O₂(g) --> 2Fe₂O₃(s) ΔH = –1500 kJ

• -500 kJ

• 500 kJ

• -750 kJ

• -4500 kJ

Tags

NGSS.HS-PS3-1

What mass of P₄ must be reacted to produce 5905 kJ of energy?

• 25.43 g

• 563.0 g

• 2.421 g

• 300.0 g

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

SL

Tags

NGSS.HS-PS1-4

SL

Tags

NGSS.HS-PS1-4

• True

• False

The standard enthalpy of formation

(ΔH_f) of gaseous water is zero.

• True

• False

What is the standard enthalpy of formation for an element in its most stable form?

• Zero

• Positive

• Negative

• Depends on the element

Which of the following statements is true about the enthalpy of formation?

• It is always positive

• It is always negative

• It can be either positive or negative

• It is always zero

The enthalpy of formation of carbon dioxide is measured under which conditions?

• Standard conditions

• High pressure

• Low temperature

• Vacuum