<p>How in depth does the Chemistry SAT II test rate laws/equations? In my AP chem class this year, my teacher taught us the equations for the rate (like half-life) so you can calculate the concentration once you know the K value (and the order). Do I need to know those equations (like in AP chem) or do I only need to know R=k[concentration]^order
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<p>Also, how do you write the rate law for a 3 step reaction, where the first one and third one is fast, while the second one is slow? I really do not get this, so please make a detailed explanation.</p>
<p>Also, what was the raw score curve for an 800 on the last May test?</p>
<p>Unfortunately you don’t really need to know too much about the rate law other than rate=k[x]^y (being a math-minded person i find this really easy and am terrible at like everything else)
the slowest step is the rate determining step. i still need to review as i havent done anything since the ap exam but i think you just take all the reactants in the slowest step and multiply their concentrations for the rate law. say this is the slowest step in some mechanism:
2h2+o2–>2h2o
rate=k[H2]^2 (because of the coefficient. the coefficient of the term becomes the power to which its concentration is raised in the rate law)[O2]. I don’t think the product matters
im sorry if im wrong, lol - but i think this is right</p>