The Orders Are Measured, Not Read Off the Equation

You'll learnthat reaction orders are measured from initial-rate data, not read off the coefficients.

A balanced equation says what reacts with what, and in what ratio. It says nothing about how fast. The exponents in a rate law are experimental results, and the only way to get one is to change a concentration and watch what the rate does. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · A + 2B → C · MEASURED: rate = k[A]²[B] · v4

three trials, one concentration changed at a time · the data decides

Before you start

What you're looking at

A three-trial initial-rate table for A + 2B → C, with the rate column still blank.

The question

If you double the concentration of A, what happens to the rate?

Step 1 / 12