Equilibrium Expressions

Calculate [H₂O] if K_eq = 1.2, [CO₂] = 0.846M, and [CH₄]= 0.0713M 4CuO_(s) +CH_4(g) ⇌ CO_2(g)+4Cu_(s) +2H₂O_(g)

• 0.101 M

• 0.318 M

• 0.0102 M

• 3.77 M

Tags

NGSS.HS-PS1-7

This symbol indicates that a reaction is _____

• reversible

• irreversible

Tags

NGSS.HS-PS1-6

Which of the following is NOT true at equilibrium?

• The concentrations of reactants and products do not change.

• The forward and reverse reactions proceed at the same rate.

• The concentration of the reactants is equal to the concentration of the products.

• The forward and reverse reactions continue to occur.

Select all of the statements that are always correct about dynamic equilibrium

• established when the product and reactant concentrations are equal

• achieved when the forward and reverse reaction rates are same

• established when the concentration of reactants is unchanging

• achieved when the concentration ratio of reactants to products becomes stable

• achieved when the forward and reverse reactions stop occurring

What is the K_c expression for this reaction?
   2 NO_(g)  +  O_2(g) ⇌  2 NO_2(g)

• K_c = [NO₂]² / [NO]² [O₂]

• K_c =  [NO]² [O₂] / [NO₂]²

• K_c = [NO]² [O₂] [NO₂]²

• K_c = [NO₂]² / [NO]² +  [O₂]

N₂O₄(g) ↔ 2 NO₂(g)
What is the concentration equilibrium constant expression?

• K_c = [NO₂]²/[N₂O₄]

• K_c = [N₂O₄]/[NO₂]²

• K_c = [N₂O₄]²/[NO₂]

• K_c = [NO₂]/[N₂O₄]²

What are [A] and [B]?

• concentration of reactants

• concentration of products

• energy of reactants

• energy of products

Tags

NGSS.HS-PS1-5

Consider the following reaction. What would be the equilibrium constant expression?
4Br₂(g) + CH₄(g) ↔  4HBr(g) + CBr₄(g)

• [Br₂]⁴  [CH₄]/ [HBr]⁴  [CBr₄]

• [HBr]⁴ [CBr₄]/ [Br₂]⁴ [CH₄]

• [HBr ]/ [Br₂]⁴ [CH₄]

• [HBr]⁴ [CBr₄]/ [Br₂]⁴ [CH]⁴]

What is the reaction/equation for this K_c expression_

• 2N₂ + O₂ ⇌ 2NO

• N₂ + O₂ ⇌ NO

• NO ⇌ 2NO

• N₂ + O₂ ⇌ 2NO

Tags

NGSS.HS-PS1-7

This symbol indicates that a reaction is ____________

• reversible

• irreversible

Tags

NGSS.HS-PS1-6