What is the overall reaction order for the following rate law: rate = k[a][b][c]?

• A. 3
• B. 2
• C. 0
• D. 1

Answer: (A)

Verified step by step guidance

1. Identify the rate law given: \(\text{rate} = k[\text{A}][\text{B}][\text{C}]\).
2. Recall that the overall reaction order is the sum of the exponents of the concentration terms in the rate law.
3. In this rate law, each concentration term \([\text{A}]\), \([\text{B}]\), and \([\text{C}]\) is raised to the first power (implied exponent of 1).
4. Add the exponents together: \$1 + 1 + 1$.
5. Conclude that the overall reaction order is 3.