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  • Need clarity, kindly explain! 50% of a zero order reaction completes in 50 minutes. 100% of the some reaction under similar conditions shall complete in

50% of a zero order reaction completes in 50 minutes. 100% of the some reaction under similar conditions shall complete in

  • Option 1)

    50 min

  • Option 2)

    100 min

  • Option 3)

    200 min

  • Option 4)

    Infinite time

 

Answers (2)

best_answer

As we learned in concept

Zero Order Reaction -

Zero order reaction means that the rate of the reaction is proportional to zeroth power of the concentration of reactants

 

- wherein

R\rightarrow P

Rate=\frac{-d(R)}{dt}=K[R]^{0}=K

t_\frac {1}{2}= time required for half completion of reaction=\frac{a}{2k}

 

 Initial amount of reactant =a (lets say)

Then , after t_{\frac{1}{2}}, amount left =\frac{a}{2}

Rate = k= \frac{a}{2*50}= \frac{a}{100} 

So, amount a will be consumed in \frac{a}{k} time.

=\frac{a}{\frac{a}{100}}

=100 \: \: min

 


Option 1)

50 min

Incorrect option

Option 2)

100 min

Correct option

Option 3)

200 min

Incorrect option

Option 4)

Infinite time

Incorrect option

Posted by

Plabita

View full answer

For zero order reaction 

K=x/t

Here 

X= 50

t= 50 min 

K= 50/50 

    =1 

Now for 100% completion

T= x/k

   =100/1 

   = 100 min 

 

   

Posted by

Unnati gupta

View full answer

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