S3-Q6-ch2 and Ch3 till factors affecting on rate of reaction

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

NGSS.HS-PS1-6

For the reaction...

N_{2 (g)} + 3 H_2(g) ⇌ 2 NH_{3 (g)}

If the pressure in the system is increased, which substance(s) will increase in concentration?

• N₂

• H₂

• N₂ and H₂

• NH₃

What is the effect of increasing the pressure on the following equilibrium: 2NO(g) + O₂ (g) ⇌2NO₂(g)?

• The yield of NO₂ increases

• The yield of NO₂ decreases

• The reaction is slower

• The concentration of O₂ increases.

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

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

2SO₂(g)+O₂(g)⇌2SO₃(g)

Adding SO₃(g) will

• shift equilibrium right

• shift equilibrium left

• increase K

• have no change

Tags

NGSS.HS-PS1-5

H₂(g)+Cl₂(g)⇌2HCl(g)

Increasing the pressure will

• shift equilibrium right

• shift equilibrium left

• You cannot predict the effect

• have no change

Tags

NGSS.HS-PS1-6

For the reaction...

heat + N₂ + O₂ <−> 2NO

If O₂ is removed, the concentration of N₂ will _______.

• increase

• decrease

• remain the same

• double

For the reaction...

N₂ + O₂ <−> 2NO - heat

If the heat is removed from the chemical system, the concentration of N₂ will _______.

• increase

• decrease

• remain the same

• double

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-PS1-6

For the following reaction:

H_2(g) + Cl_{2 (g)} ↔ 2HCl_(g),

calculate the concentration of HCl when K_c= 2.3x10^-5, [H₂]= 0.0056mol, [Cl₂]= 0.0048mol.

• 6.2 x 10^-10 M

• 2.5 x 10^-5 M

• 1.1 M

• 1.2 M