Ammonia decomposes when heated according to the equationNH3 (g)NH2 (g) H(g)The data in the table for this reaction were collected at a high temperatureNH3] (mol/L)Time (h)08.00 x 107256.75 x 10-7505.84 x 10-7755.15 x 10-7Plot ln[NH3 versus time and 1/[NH3] versus time. What is the order of this rection with respect to NH3?

Question
Asked Oct 15, 2019
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what is the reaction order?

what is the rate constant?

Ammonia decomposes when heated according to the equation
NH3 (g)
NH2 (g) H(g)
The data in the table for this reaction were collected at a high temperature
NH3] (mol/L)
Time (h)
0
8.00 x 107
25
6.75 x 10-7
50
5.84 x 10-7
75
5.15 x 10-7
Plot ln[NH3 versus time and 1/[NH3] versus time. What is the order of this rection with respect to NH3?
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Ammonia decomposes when heated according to the equation NH3 (g) NH2 (g) H(g) The data in the table for this reaction were collected at a high temperature NH3] (mol/L) Time (h) 0 8.00 x 107 25 6.75 x 10-7 50 5.84 x 10-7 75 5.15 x 10-7 Plot ln[NH3 versus time and 1/[NH3] versus time. What is the order of this rection with respect to NH3?

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Expert Answer

Step 1

Given is the data for time and concentration of NH3

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NH3] (mol/L) Time (h) 0 8.00 x 10-7 25 6.75 x 10-7 50 5.84 x 10-7 75 5.15 x 10-7

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Step 2

When we calculate the average rate

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8.00mol/L-6.75mol/L avg rate25 (25-0)sec =0.05mol/L-sec (6.75mol/L-5.84mol/L) x 10 avg rate25-50 (50-25)sec =0.036mol/L-sec

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Step 3

Since the average rate is not same there fore this is not the zeroth order reaction

Checking for first order

Converting the concentration to log and neglecting the 10-7 part

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