A particular electrochemical instrument has a limit of quantitation corresponding to 0.100 μA (Ipc) in cyclic voltammetry. An experiment was performed for the reduction of Cd2+(aq) to metallic Cd using a circular glassy carbon electrode of 5.0 mm diameter and a sweep rate of 50 mV·s-1. The diffusion coefficient for hydrated Cd2+ is 6.1x10-6 cm2·s-1. What is the minimum theoretical concentration of Cd2+ that can be quantified? [Hint: use the Randles-Sevcik equation with a constant of 2.69x105 C·mol-1·L·m-3·V-½ rather than the usual 2.69x108 C·mol-1·V-½ and note there are 1000 L in 1 m3).
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Ответ:
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Explanation:
Ответ:
Organizing and displaying data are important in statistics. After data are collected, the data may not make sense just looking at them. That is why it is important to organize and display the data using tables or graphs.
Explanation: