Outook MyStarbucks Blackboard Learn Omal Yaboo Mail Apple MTA Bus Time: Route M1

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Outook MyStarbucks Blackboard Learn Omal Yaboo Mail Apple MTA Bus Time: Route M1O2 ollege - CHEM168-Fa 17 - MILLS: Topic 16 Skills Practics Video E 4Jump to. an College-CHEM168-Fall17- MILLS> Activities and Due Dates Topic 15 Skills Practice Video E Resou 011/26/2017 11:55PM 01/311/21/2017 11:43 AM Print CalcuiatorPerlocic Table ncomectIncoedt3 Incorrect Gradebook Question 2 of 3 Dr Sapling Learning Mapdo Pc After 58.0 min 27,0% of a co pound has de omposed. What is te half-fe of this recon asuring first kinetics? der 133.5 min There is a hint availablel View the hint by dicking on the divider bar again to hide the hint Close bottom divider eck Answer (D Neat Ext +Previous (> Give up & View Solution Hint contact us help about us careers prvacy polcyers of use MacBook Air

Explanation / Answer

For a first order reaction:

k = (2.303/t) log A0/A

Where, k = rate constant, t = time, A0 = initial amount and A = amount remaining after time t

k = (2.303/58) log 100/(100-27)

k = (2.303/58) (log 100 – log73)

k = (2.303/58) (2 – 1.86)

k = 5.56 x 10-3 min-1

t1/2 = 0.693/k = 0.693/ (5.56 x 10-3) = 124.6 min

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