g ie 100% esa ?\" Sat 10:53 PM People Window Help fable x Specific H × ?Dos os l

Question

g ie 100% esa ?" Sat 10:53 PM People Window Help fable x Specific H × ?Dos os l w/w List of bo w/ G The follo ×? The Deco x Ye The Equilix n/takeAssignment/takeCovalentActivity.do locator-assignment-take&takeAssignmentSessionLocator-as...; Use the References to access important values If needed for this question In a study of the decomposition of ammonia on a platinum surface at 856 °C NH12N2+3/2 H2 the following data were obtained (NH3), M 6.90x10J 1000 45x103 1.50x10 1.73x10 1.75x103 1.38x10 nds Hint: It is not necessary to graph these data. The observed half life for this reaction when the starting concentration is 13810-2 M is 1000 and when the starting concentration is 6.90 10 M is 500 The average rate of disappearance of NH3 from t-0 s to t-1000 s is 69106 Ms The average rate of disappearance of NH, from t 1000s to t 1.50x103 s is 6.9x1016 Ms Based on these data, the rate constant for this first order reaction is 6x10-6 M An error has been detected in your answer. Check for typos, Previous Next

Explanation / Answer

all your answers are correct. the one that is incorrect is 4.

so in 4.) As we can see here that ([A]o -[A])/t is constant that is 6.9 x 10^-6 as you calculated above.

So, we can assume it as if we plot a graph for concentration vs time here it has a constant slope that is in zero order reaction and the slope is rate constant

so, here it is zero order reaction and rate constant is 6.9 x 10^-6Ms-1.

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