Answered: Please can you help we with these…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Please can you help we with these three. Also the reason I put three is because they all go together as one question.

Expert Solution

Step 1

The balanced reaction taking place is given as,

Given : Initial concentration of KMnO₄ = 0.8756 M

Final concentration of KMnO₄ = 0.2365 M

And time taken = 1.35 min (NOTE : The unit of time can not be min/sec. Hence I'm assuming it to be min for the analysis)

Step 2

a) The average rate for the KMnO₄ is given by,

$= > R a t e f o r K M n O_{4} = \frac{C h a n g e i n c o n c e n t r a t i o n}{t i m e t a k e n} H e n c e s u b s t i t u t i n g t h e v a l u e s w e g e t, = > R a t e f o r K M n O_{4} = \frac{0.2365 - 0.8756}{1.35} = - 0.47341 M / m i n a p p r o x .$

NOTE : The -ve rate shows that the concentration of KMnO₄ is decreasing.

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