CHEMICAL EQUILIBRIUM RT

A reaction of reversible because

• Reactants are reactive

• Products are reactive

• Products are stable

• Reactants are stable

For which system does the equilibrium constant, Kc has units of concentration

• N₂ + 3H₂ ↔ 2NH₃

• N₂O₄ ↔ 2NO₂

• CO + H₂O ↔ CO₂ + H₂

• 2HF ↔ H₂ + F₂

The precipitation occurs if the ionic concentration is

• Less than Ksp

• More than Ksp

• Equal to Ksp

• Is present an any moment

For which reaction the numerical value of Kc and Kp are same

• N₂ + 3H₂ ↔ 2NH₃

• 2SO₂ + O₂ ↔ 2SO₃

• H₂ + Cl₂ ↔ 2HCl

• N₂O₄ ↔ 2NO₂

The equilibrium established between the two different phases is called

• Homogenous equilibrium

• Isogenious equilibrium

• Heterogeneous equilibrium

• None

A chemical equilibrium in reaction is established when

• Concentration of the reactants and products is equal

• Opposing reaction is happening

• Velocities of the opposing reactions are equal

• Temperature of the opposing reactions are equal

The direction of the reaction is predicted

• Law of mass action

• Kc

• Le-chatlier

• Hess’s law

The Le-chatlier’s principle corresponds with the Newton’s _________ law

• First

• Second

• Third

• Gravitation

If Kc > 1 then the reaction

• Moves in forward direction

• Moves in backward direction

• It is equilibrium

• None

which of the following aqueous solution is basic?

• NaCl

• Na₂SO₄

• Na₂CO₃

• FeCl₃