Chem... rate law expressions?

[thecomisar]

<p>If I'm writing out my experimentally determined rate law with the calculated value of k, do I include units for k? Should it be like this:</p>

<p>Rate = 0.004191[I-]^1<em>[BrO3-]^0</em>[H+]^1</p>

<p>or this?
Rate = 0.004191M^-1 s^-1 [I-]^1<em>[BrO3-]^0</em>[H+]^1</p>

<p>Or should I just put</p>

<p>Rate = k[I-]^1<em>[BrO3-]^0</em>[H+]^1
k = 0.004191 M^-1 s^-1</p>

<p>?</p>

[iin77]

<p>My teacher has said that you don't need any units--not even M^-1 s^-1--for rate constants on the AP test unless they ask for it. Dunno if that helps, lol.</p>

[skp21]

<p>use the latter. and units for K do matter as many of the free responses say to specifically indicate the units of K</p>