1.

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

Answer»

2HOURS
1 hour
0.5 hour
0.25 hour

SOLUTION :`k = (2.303)/(t)` log `(0.8)/(0.6) = 2.303` log `(4)/(3)`
`t = (2.303)/(k)` log `(0.9)/(0.675) = (2.303)/(k) "log" (4)/(3) ` , t = 1 hour .


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