Rate of Reaction

Question 1

Rate of Reaction: Equation

Rate of Reaction

Answer 1

• amount of reactants used/ time
• amount of products formed/time

Question 2

Rate of Reaction: How to measure RoR

Gas

(gas is given off)

Answer 2

• Measure the rate at which the mass of a reaction changes

Question 3

Rate of Reaction: How to measure RoR

Solid

(precipitate appears)

Answer 3

• Measure the rate at which solid appears

Question 4

Rate of Reaction: Collision Theory

Activation Energy

Answer 4

Min energy needed for particles to collide in the right direction causing a successful reaction

Question 5

Rate of Reaction:

Maxwell Boltzmann Distribution

Answer 5

Question 6

Rate of Reaction: Factors affecting RoR

Concentration

Answer 6

• Increased = more frequent collisions
  ↳ increased RoR

Question 7

Rate of Reaction: Factors affecting RoR

Pressure

Answer 7

• Increased = more frequent collisions
  ↳ increased RoR

Question 8

Rate of Reaction: Factors affecting RoR

Catalyst

Answer 8

Speeds up RoR by finding a diff pathway w lower Ea without being used up

Question 9

Rate of Reaction: Factors affecting RoR

Surface Area

Answer 9

• Increased = more chances for collision
  ↳ more space = more reactions

Question 10

Rate of Reaction: Catalysts

Homogeneous

(same state as reactants)

Answer 10

• Usuall aqueous
• Reactants combine w catalysts making products
• Catalyst reformed

Question 11

Rate of Reaction: Catalysts

Heterogeneous

(diff state to reactants)

Answer 11

• Reaction works on surface of solid catalyst
• ADOSRPTION: reactants bond w surface of catalyst
• Reactants bonds break forming radicals → pair up to form new products
• DESORPTION: new products then detach from catalyst