Question

Optical rotation of sucrose in 1 N Hcl at various times was found as shown below :
`{:("Time (sec)",0,7.18,18.0,27.05,oo),("Rotation (deg)",+24.09,+21.7,+17.7,+15.0,-10.74):}`
Shwo that the inversion of scrose is a first order reaction

Answer 1

Initial concentration `[A]_(t)= r_(t)r_(oo)`
At time, `[A]_(t)= r_(t)r_(oo)`
`k=11.8xx10^(-3)s^(-1)`