Chemical kinetics question

Question

1) The hydrolysis of sucrose (C12H22O11) into glucose and fructose in acidic water has a rate constant of 1.8 x 10-4 s-1 at 25oC. Experimentally, it is found that the rate of reaction only depends on concentration of sucrose. 

(a) Draw the graph of the kinetic data of the reaction which yield a straight-line function based on integrated rate law (label x and y axis). 

Answer 1

Since you know the reaction is 1st order, a linear graph would be ln [sucrose] vs. time

The line will have a negative slope and the value of the slope should be = k. So, in your case, you need to have a slope of -1.8x10^-4

We can't draw graphs on this Wyzant platform, but you can just choose arbitrary values for the concentration of sucrose and time, and then calculate the resulting [A] using the integrated rate law for a 1st order reaction.

ln [A] = -kt + ln [A]_o . Plug in values for A_o and t and use the given rate constant to solve for [A], then plot these data with t on the x axis and ln [A] on the y axis.