For the first order reaction with half life is 150 seconds , the time for the concentration of the reactant to fall from m/ 10 to m/100 will be approximately

Options

A. 600 s
B. 900s
C. 500s
D. 1500s

Answer

C

Explanation

`(M )/(10)overset(t_(1//2))to (M )/(20)overset(t_(1//2))to (M )/(40 )overset(t_(1//2))to (M )/(80 )overset(t_(1//2)to (M)/(180)`
` therefore T=~3xxt_(1//2)=~450 "to" 600s`