The reaction : `A rarr B ` follows first order kinetics . The time taken for 0.8 mol of A to produce 0.6 mol of B is 1 hour . What is the time taken for conversion of 0.9 mol of A to produce 0.675 mol of B ?

Options

A. 1 hour
B. 0.5 hour
C. 0.25 hour
D. 2 hours

Answer

A

Explanation

(A) The fraction of A reacted in each case is
same `i.e (0.6)/(0.8) = (3)/(4) ` and `(0.675)/(0.90) = (3)/(4)`
`:.` Time taken is same .