Explore BrainMass

Explore BrainMass

    Half-life of first order process

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    A reactant undergoes a dissociation reaction A r arrow 2B which follows first order kinetics. The initial concentration of reactant A is .4000 M and after 75.00 hr the concentration of A decreases to 0.0816 M. Determine the half-life of the first order process.

    There must be a simple equation for this, but my textbook must assume we would already know it. I can't find it anywhere! Thanks

    © BrainMass Inc. brainmass.com February 24, 2021, 2:32 pm ad1c9bdddf
    https://brainmass.com/chemistry/physical-chemistry/half-life-first-order-process-27926

    Solution Preview

    Please see the attachment.

    [A]t
    ln ------------ = -k * t
    ...

    Solution Summary

    This solution is provided in 41 words in an attached .doc file. It provides a simple, brief calculation for finding half-life of a process.

    $2.19

    ADVERTISEMENT