HW Number 17 (6th ed.)

[805132275]

For number 17, when determining the order for reactant B, why did they use experiments 2 & 3 rather than 1 & 3? Does it matter?

[Shally Li 2C]

In experiment 1 and 3, the concentration of A also changes so you cannot determine if the change in initial rate is because of the change in [A] or [B]. In experiments 2 and 3, only [B] changes ([C] does not affect rate), so you know that any change in rate is due to the change in [B].

[204929947]

how would i find the rate constant ????