For a first order reaction, 99.9% completion takes about how many half-lives?
A10 half-lives
B2 half-lives
C8 half-lives
D5 half-lives
Answer & Solution
Correct answer: A. 10 half-lives
t(99.9%) = (2.303/k) log 1000 = 6.909/k, which is about 10 times 0.693/k.
Related questions
Chemical equilibrium is reached whenWhich technique studies fast reactions by a sudden temperature or pressure change?The study of reactions initiated by light is calledCrushing a solid reactant speeds a reaction because itIn 1864 Waage and Guldberg published which law?Who received the first Nobel Prize in Chemistry in 1901 for laws of chemical dynamics?Who studied the inversion of sucrose in 1850, pioneering chemical kinetics?The number of collisions per second per unit volume of a reaction mixture is called