How do you determine a reaction rate experimentally? I can use ph probes, pressu
ID: 627899 • Letter: H
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How do you determine a reaction rate experimentally? I can use ph probes, pressure probes, and gas laws.Explanation / Answer
The rate is usually given in terms of moles/Litre seconds but this is not always the case. You will have to be very careful about the units of each participant reactant in order to get the proper units for the rate constant itself. Before we can determine the value of the rate constant 'k', we need to find the exponential value for each participant. To find the relationship of one reactant it is necessary to keep the other reactant(s) constant so look at the following reaction and data table: NO + H2 -----> HNO2 (balance it if you'd like, but the balanced equation will not give you the exponential values unless the equation is a one-step reaction). Rates of reaction between NO and H2 at 800oC Experiment NO H2 Initial Rate of Reaction Number moles/L moles/L moles/L sec 1 0.001 0.004 0.002 2 0.002 0.004 0.008 3 0.003 0.004 0.018 4 0.004 0.001 0.008 5 0.004 0.002 0.016 6 0.004 0.003 0.024 ----------------------------------------------------------------- From the equation we can write a partial rate law as rate = k[NO]m[H2]n
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