Chemical Equilibrium

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

• K_c= [CO][H₂O] / [CO₂][H₂]  
• K_c= [CO₂][H₂] / [CO]
• K_c= [CO₂][H₂] / [CO][H₂O]
• K_c= [CO] / [CO₂][H₂]  

Tags

NGSS.HS-PS1-7

What is the molarity of 1 mole of Ba+ in 2 L of water

• 1 M
• 2 M
• .5 M
• .25 M

What is the molarity of 3 mole of hydrochloric acid in 3 L of water.

• 3

• 1

• 6

• 9

What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?

• 0.488 M
• 7.67 mol
• 7.67 M
• 0.00767 M

In a .4 L solution at equilibrium

 $CaCO_3$  3 moles
 $CaO$  .5 moles
 $CO_2$  7 moles
balanced eq  $CaCO_3\longleftrightarrow CaO+CO_2$  
What is the Keq

 $BaCl_{2_{ }}+H_2SO_4\ \longleftrightarrow\ BaSO_4+2HCl$ 

 In a solution .96 L solution at equilibrium

 $BaCl_2$   .87 mole
 $H_2SO_4$  .1 mole

 $BaSO_4$   .5 mole

 $HCl$   .5 mole
what is the Keq

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

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

For the reaction...

SO₂ + O₂ ⇌ SO₃

If the concentration of SO₂ is increased, the equilibrium of the reaction will shift ___________.

• left

• right

• left and right

• neither left nor right

Tags

NGSS.HS-PS1-5

2SO₂(g)+O₂(g)⇌2SO₃(g)
Removing O₂(g) will

• shift equilibrium right
• shift equilibrium left
• increase pressure
• have no change