Equilibrium Practice

When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in

• Chemical Equilibrium
• Chemical Balance
• Stoichiometry
• Chemical Reaction

Tags

NGSS.HS-PS1-6

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

Which of the following is NOT true at equilibrium?

• The forward and reverse reactions proceed at the same rate.
• The concentrations of reactants and products do not change.
• The concentration of the reactants is equal to the concentration of the products.
• The forward and reverse reactions continue to occur.

What are [C] and [D]?

• concentration of reactants

• concentration of products

• energy of reactants

• energy of products

Tags

NGSS.HS-PS1-5

Such reactions which continue in both directions are called:

• Irreversible reactions

• Reversible reactions

• Non-reactive reactions

• dynamic reactions

At what time the reaction reached equilibrium?

• t₁
• t₂
• t₃
• t₄

Which of the two graphs reaches equilibrium?

• The left one.
• The right one.
• Both of them.
• Neither.

  $A_{2\ }+\ B_{2\ }\ \leftrightarrow\ \ 2\ AB$  
The reverse reaction forms the substance __________.

•  $A_2$  

•  $B_2$  

• AB

•  $A_2+B_2$  

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What is the equilibrium-constant expression for 
CO₂(g) + H₂(g) ↔ CO(g) + H₂O(l)

What is the proper K_eq for the following reaction?

2 NO_(g) + O_2(g) ⇌2 NO_2(g)