Enthalpies

Which reaction has an enthalpy change equal to the standard enthalpy of formation of lithium fluoride?

• Li(g) + 1/2F₂(g) → LiF(s)

• Li⁺(g) + F^–(g) → LiF(s)

• Li⁺(aq) + F^–(aq) → LiF(s)

• Li(s) + 1/2F₂(g) → LiF(s)

Tags

NGSS.HS-PS1-4

What is the enthalpy of formation of buta-1,3-diene, C₄H₆(g)?

• +112 kJ mol^–1

• –112 kJ mol^–1

• +746 kJ mol^–1

• –746 kJ mol^–1

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Consider the reactions

C₂H₄(g) + 2O₂(g) → 2CO(g) + 2H₂O(g)                            ∆H = −758 kJ mol⁻¹

2C(s) + 2H₂(g) → C₂H₄(g)                                        ∆H = +52 kJ mol⁻¹

H₂(g) +  O₂(g) → H₂O(g)                                         ∆H = −242 kJ mol⁻¹

The enthalpy of formation of carbon monoxide is

• −111 kJ mol⁻¹

• −163 kJ mol⁻¹

• −222 kJ mol⁻¹

• -464 kJ mol⁻¹

Tags

NGSS.HS-PS1-4

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

Answer the question in the image

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4