Rate Laws: Order Determination & Concentration Change Calculation - Prof. Lisa Dysleski, Study notes of Chemistry

Download Rate Laws: Order Determination & Concentration Change Calculation - Prof. Lisa Dysleski and more Study notes Chemistry in PDF only on Docsity! 26 January Checking a Rate Law: Use the data you used to generate the rate law 1. Concentration measurements tell you the initial rate. 2. Multiple experiments tell you the order. 3. Order and rate data tell you the rate constant. Zero order overall rate law Rate = k 1st order overall rate law Rate = k [A] Also, 1st order with respect to A 2nd order overall rate law Rate = k [A]2 Also, 2nd order with respect to A Rate = k [A] [B] 1st order with respect to A, 1st order with respect to B 2N2O5 (g) → 4NO2 (g) + O2 (g) The rate constant, k, for this reaction is 0.00681 s-1 First order → unit on k Rate = (0.00681 s-1) [N2O5] What is [N2O5] at 1.0 hour if [N2O5]0 = 0.200 M? Initial rate = 0.001362