Enthalpy Changes of Reactions

Which of the following represent the enthalpy change of atomization?

• O₂(g) → 2 O(g)

• Mg(s) → Mg(g)

• Mg(s) + Cl₂(g) → MgCl₂(s)

• Ca(g) → Ca²⁺(g) + 2 e

Tags

NGSS.HS-PS1-4

which of the following enthalpy changes represent the enthalpy change of formation?

• Mg(s) + Cl₂(g) → MgCl₂(s)

• Mg²⁺(g) + 2 Cl ^-(g) → MgCl₂(aq)

• O2(g) → 2 O(g)

• 2Mg (s) + O₂(g) → 2MgO(S)

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Which one represent the electron affinity of chlorine?

• 1/2Cl₂(g) → 2 Cl(g)

• Cl(g) + e → Cl- (g)

• 1/2 Cl₂(g) + e → Cl^- (g)

• Cl₂(g)→ 2 Cl^-(g) + 2e^-

which of the following represent the enthalpy change of hydration?

• Mg(s) → Mg²⁺(g)

• Mg(s) → Mg²⁺(g) + 2 e

• Cl₂(g) + (aq)→ 2Cl(aq)

• Mg(g) +(aq) → Mg²⁺(aq)

Which of the following represent enthalpy change of solution?

• Cl₂(g) + (aq) ---> 2Cl^-(aq) .

• Mg²⁺(g) ---> Mg²⁺(aq)

• MgCl₂(s) + (aq) ---> Mg²⁺(aq) + 2Cl^-(aq) .

• Mg2+(g) + 2Cl-(g) + (aq) --> Mg2+(aq) + 2Cl-(aq)

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

which of the following represent the enthalpy change of 1st ionization enthalpy?

• Mg(s) --> Mg²⁺(g) + 2e-(aq)

• Mg(s) --> Mg⁺(g) + e-(aq)

• Mg(s) --> Mg⁺(g) + e-(aq)

• Mg(g) --> Mg⁺(g) + e-(aq)

MgCl₂(s) ---> Mg²⁺(g) + 2Cl^-(g)

This equation represents

• Enthalpy of hydration

• Enthalpy of solution

• Lattice enthalpy of dissociation

• Lattice enthalpy of formation

1/2 O₂(g) → O(g)

This equation represents.

• Enthalpy of atomization

• enthalpy of sublimation

• enthalpy of dissociation

• enthalpy of formation

Tags

NGSS.HS-PS1-4

which of the following represent the equation for enthalpy of sublimation

• 1/2 Br (s) → Br(g)

• 1/2 I ₂(s) → I(g)

• 1/2 O(g) → 2 O(g)

• Mg(s) → Mg²⁺ (g) + 2e

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

which of the following represent the lattice enthalpy of formation of sodium flouride

• 2Na(g) + F₂(g) → 2NaF(g)

• Na(s) + 1/2F₂(g) → NaF(s)

• 2Na(s) + 1/2F₂(g) → NaF(g)

• 2Na(s) + F₂(g) → 2NaF(g)

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1