Kinetics - Collision Theory

Question 1

Explain why most collisions do not lead to a reaction

Answer 1

Not the right orientation or not enough energy for the reaction

Question 2

Give one reason why reaction between hydrogen & chlorine is very slow at room temperature

Answer 2

Not many molecules with E≥Ea

Question 3

Explain why an increase in pressure, at constant temp, increases rate of reaction between hydrogen & chlorine

Answer 3

Particles are closer together, so they collide more often

Question 4

Meaning of rate of reaction

Answer 4

Change in concentration of product per second

Question 5

Explain what must happen for a reaction to occur between molecules of 2 different gases

Answer 5

Molecules collide with E≥Ea

Question 6

Explain why an increase in temp increases the rate of a chemical reaction

Answer 6

Many more particles that have E≥Ea so there are more particles that can react so more frequent successful collisions