Anonymous
Anonymous asked in Science & MathematicsChemistry · 4 weeks ago

Using reactant reaction order to predict changes in initial rate?

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  • Dr W
    Lv 7
    4 weeks ago

    the general rate equation would look like

    .. rate = k * [N2]² * [H2]²

    the ² is the order of each.. .[ ] is concentration in molarity

    so for two reactions we can write

    .. rate #1 = k * [N2 #1]² * [H2 #1]²

    .. rate #2 = k * [N2 #2]² * [H2 #2]²

    dividing the 2nd by the first

    .. rate #2 / rate #1 = (k/k) * ([N2 #2] / [N2 #1])² * ([H2 #2] / [H2 #1])²

    or

    .. rate2 = rate1 *  * ([N2#2] / [N2#1])² * ([H2#2] / [H2#1])²

    plugging in your data

    .. rate2 = 0234 M/s * (0.473M / 0.142M)² * (1.47M / 1.47M)²

    .. rate2 = 2.60 M/s

    and

    .. rate2 = 0.234 M/s * (0.0467M / 0.142M)² * (4.47M / 1.47M)²

    .. rate2 = 0.234 M/s

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