Question

Consider the rate law below.

Answer 1

C. quadruples the rate

Further explanation

Given

The rate law :

R=k[A]²

Required

The rate

Solution

There are several factors that influence reaction kinetics :  

• 1. Concentration  
• 2. Surface area  
• 3. Temperature  
• 4. Catalyst  
• 5. Pressure  
• 6. Stirring  

The rate is proportional to the concentration.

If the concentration increased, the reaction rate will increase

The reaction is second-order overall(The exponent is 2)

The concentration of A is doubled, the reaction rate will increase :

r = k[A]² ⇒ r= k[2A]²⇒r=4k[A]²

The reaction rate will quadruple.