Half life of a first order reaction is a constant

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: exponential curve; graph of ln [A] vs. t is a straight line with a negative slope where slope = k the rate constant. Half-life of a first order reaction is a constant; t1/2=0.693/k. Integrated form of first order equation: ln [A]t ln = − kt + ln [A]0 OR ln [A]0 – ln[A]t = kt OR equations are given in the Data Book). [ A]0 = kt [ A]t ; [A]t = [A]0e-kt (the last two o If the rate quadruples when concentration doubles: rate = k [A]2. Graph of 1/[A] against time is a straight line for a second order reaction with a positive slope = k. © IBID Press 2007 2 CHAPTER 6 KINETICS (IB TOPICS 6 AND 16) SUMMARY o For a third-order reaction, if rate = k[A]3, then as [A] doubles, rate increases 8 times. o Rate increases with temperature when concentrations are constant, k increases rapidly with T and is temperature dependent, producing a straight line graph...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online