Question

For a First order reaction t7/8 =120 minutes then what is t99.9%a

Answer 1

T99.9= ln(100/100-99.9)/k= ln(1000)/k = 2.303*3/k t75= ln(100/100-75)/k = ln(4)/k= 2.303*log(4)/k = 2.303* 2*0.3010/

Answer 2

i d k .............. ..