[填空题]
The relationship betwee 8qo o:o job7mdd-;vg 52*lklnp*lk9en the j:agsr1zv v /yy 9a5sl0wv37 wconcentration of a reactant, A, and the time, for a second-order reaction can be expressed using the equa :7sv jasgz0vrvwya /93y15l wtion below:
$\frac{1}{[A]}$=kt+$\frac{1}{[A]_o}$
Where [A] is the concentration of reactant A,$[A]_o$,is the initial concentration of reactant A,t is the time in seconds, and k is a constant.
1.Calculate the gradient of the line and state the correct units.
2.Use the graph to determine $[A]_o$ (also known as the initial concentration of A)
$[A]_o$= mol dm$^{-3}$
3.Determine the time at which the concentration of A is equal to an eighth of its initial concentration.
(If you were unable to complete parts (a), and (b), you may use k=0.02, and $A_o$=42)
[A]= mold m$^{-3}$;Substitute and rearrange: seconds
