Equilibrium Tutorial

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

The correct coefficients to use in balancing this equation for equilibrium purposes would be 2NO₂ : 2NO: 1O_2.

• True

• False

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

The correct coefficients to use in balancing this equation for equilibrium purposes would be 1NO₂ : 1NO: 1/2O₂.

• True

• False

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If K_c = 4.0 x 10^-13 at 298 K, the reaction mixture at equilibrium at 298 K consists mainly of

• Reactants

• Products

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If K_c = 48 at 1000 K, the reaction mixture at equilibrium at 1000 K consists mainly of

• Reactants

• Products

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If K_c = 4.0 x 10^-13 at 298 K, the K_c value for the reaction at 298°C should be

• higher

• lower

• the same

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If K_c = 48 at 1000 K, the K_c value for the reaction at 1000°C should be

• higher

• lower

• the same

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If NO₂ (g) were added to the reaction vessel without affecting other property of the system, the equilibrium should

• shift forward

• shift in reverse

• not affected

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If NO (g) were added to the reaction vessel without affecting other property of the system, the equilibrium should

• shift forward

• shift in reverse

• not affected

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If He (g) were added to the reaction vessel without affecting other property of the system, the equilibrium should

• shift forward

• shift in reverse

• not affected

_____NO₂ (g) ⇌  _____NO (g) + _____O₂ (g)                     ∆H°_rxn = 114.4 kJ

If the reaction vessel was compressed without affecting any other property of the system, the equilibrium should

• shift forward

• shift in reverse

• not affected