(Solved): Q.2 Answer the following questions. 2-1) Reaction of A was investigated with ...

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Q.2 Answer the following questions. 2-1) Reaction of $\mathrm{A}$ was investigated with a batch reactor at $350\mathrm{K}.3\mathrm{L}$ of starting solution containing reactant $\mathrm{A}$ was used and the concentration of $\mathrm{A},{\mathrm{CA}}_{\mathrm{A}}$, changed as shown in the table. In this reaction, no volume change of the solution was observed. Table. Concentration change of A during the reaction. 2-1-1) Answer the order of this reaction. 2-1-2) Answer the rate constant of this reaction. 2-1-3) Estimate the time to consume the reactant to $90\%,99\%$ of the initial amount respectively. 2-2) Answer the following questions concerning Ar which acts with kinetic theory of gases at the condition of $25^{?}\mathrm{C}$ and $1.00\times 10^3\mathrm{kPa}$. Use the collision cross-section of Ar as $0.36{\mathrm{nm}}^2$ if needed. 2-2-1) Answer the mean speed with the unit of ${\mathrm{ms}}^{?1}$. 2-2-2) Answer the collision frequency with the unit of $s^{?1}$. 2-2-3) Answer the mean free path with the unit of nm. 2-2-4) Answer the mean free path when the temperature of $\mathrm{Ar}$ was increased to $50^{?}\mathrm{C}$ under constant pressure of $1.00\times 10^3\mathrm{kPa}$.