Homework Solution: Answer the following with regards to the decolorization of crystal violet:…

    Answer the following with regards to the decolorization of crystal violet: Table 1: 10mL of 0.04 M and 0.06 M NaOH with 10 mL of 0.00002 M of Crystal Violet Solution Absorbance and Time 0.06 M Time (min) Absorbance (nm) 0.04 M Time (min) Absorbance (nm) 0.498 0.378 0.305 0.245 0.200 0.161 0.128 0.103 0.083 0.068 0.054 0.045 0.038 0.032 0.028 0.023 0 0.488 0.405 0.344 0.292 0.251 0.215 0.183 0.155 0.142 0.112 0.095 0.081 0.070 0.060 0.052 0.045 0.040 0.036 0.032 0.029 0.027 0 10 10 12 13 14 15 12 13 14 15 16 17 18 19 20 A. Plot the absorbance readings against time for each of the runs and estimate the respective half-lives from the graphs generated. B. Use both the Guggenheim and the Kezdy-Swinbourne methods to evaluate the pseudo first-order rate constants, k', for each concentration of the hydroxyl ions taken. C. Using the values and the equation ln k' = ln k + m ln [OH-]determine the order with respect to the hydroxyl ions, m, by either plotting ln k' vs ln [OH-] and taking the slope or by solving the two simultaneous equations. Calculate the true constant for the reaction, k. D. Include an error analysis for both the Guggenheim and Kezdy-Swinbourne plots as these will yield straight lines from the slopes of which, k, can be determined. Determine the error in the slope and calculate the error in k.
    0.06 M Time (min) Absorbance (nm) 0.04 M Time (min) Absorbance (nm) 0.498 0.378 0.305 0.245 0.200 0.161 0.128 0.103 0.083 0.068 0.054 0.045 0.038 0.032 0.028 0.023 0 0.488 0.405 0.344 0.292 0.251 0.215 0.183 0.155 0.142 0.112 0.095 0.081 0.070 0.060 0.052 0.045 0.040 0.036 0.032 0.029 0.027 0 10 10 12 13 14 15 12 13 14 15 16 17 18 19 20

    Expert Answer

    Counter-argument the subjoined with compliments to the decolorization of crystal violet:

    Table 1: 10mL of 0.04 M and 0.06 M NaOH with 10 mL of 0.00002 M of Crystal Violet Solution Absorbance and Time

    0.06 M Time (min) Absorbance (nm) 0.04 M Time (min) Absorbance (nm) 0.498 0.378 0.305 0.245 0.200 0.161 0.128 0.103 0.083 0.068 0.054 0.045 0.038 0.032 0.028 0.023 0 0.488 0.405 0.344 0.292 0.251 0.215 0.183 0.155 0.142 0.112 0.095 0.081 0.070 0.060 0.052 0.045 0.040 0.036 0.032 0.029 0.027 0 10 10 12 13 14 15 12 13 14 15 16 17 18 19 20

    A. Plot the absorbance readings athwart time coercion each of the runs and estimate the relative half-lives from the graphs generated.

    B. Use twain the Guggenheim and the Kezdy-Swinbourne methods to evaluate the pseudo first-arrange admonish trustworthys, k’, coercion each ardor of the hydroxyl ions taken.

    C. Using the values and the equation ln k’ = ln k + m ln [OH]determine the arrange with deference to the hydroxyl ions, m, by either plotting ln k’ vs ln [OH] and entrance the originate or by solving the brace concurrent equations. Apportion the gentleman trustworthy coercion the reaction, k.

    D. Include an mistake analysis coercion twain the Guggenheim and Kezdy-Swinbourne plots as these obtain consent rectilinear lines from the originates of which, k, can be fixed. Determine the mistake in the originate and apportion the mistake in k.

    0.06 M Time (min) Absorbance (nm) 0.04 M Time (min) Absorbance (nm) 0.498 0.378 0.305 0.245 0.200 0.161 0.128 0.103 0.083 0.068 0.054 0.045 0.038 0.032 0.028 0.023 0 0.488 0.405 0.344 0.292 0.251 0.215 0.183 0.155 0.142 0.112 0.095 0.081 0.070 0.060 0.052 0.045 0.040 0.036 0.032 0.029 0.027 0 10 10 12 13 14 15 12 13 14 15 16 17 18 19 20

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