1.

For a first order reaction Ato products 93.75% of A initilly taken (2M), reacts in 80 min, then

Answer»

Rate constant is `3.465xx10^(-2)"min"^(-1)`
units of rate constant are `"min"^(-1)`
INITIAL rate is `6.93xx10^(-2)` mole `"LIT"^(-1)"min"^(-1)`
`t_(1//2)` is independent of initial concentration

SOLUTION :`Kxxt=2.303log((C_(0))/(C_(t))),K=2.303/80xxlog(100/6.25)=2.303/80xxlgo(10/2.5)=2.303/80xxlog(2)`
`=2.303/80xx4xx0.3010=0.03466=3.466xx10^(-2)"min"^(-1),rK.[A]=3.416xx10^(-2)xx2=6.93xx10^(-2)` m/min


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