considering the balanced equation: 2 N2H4 + N2O4 --> 3N2 + 4 H2O   Write the rate law for the dependence of the rate on concentration of the reactants, leaving the experimentally determined values as symbols: rate=K [   ]n etc

Chemistry by OpenStax (2015-05-04)
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Chapter12: Kinetics
Section: Chapter Questions
Problem 63E: Hydrogen iodide, HI, decomposes in the gas phase to produce hydrogen, H2, and iodine, I2. The value...
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considering the balanced equation:

2 N2H4 + N2O4 --> 3N2 + 4 H2O

 

Write the rate law for the dependence of the rate on concentration of the reactants, leaving the experimentally determined values as symbols:

rate=K [   ]n etc

Expert Solution
Step 1

Since its not given whether the reaction is elementary or not.

Hence I'm assuming it to be elementary as there is no other to solve the question with the given reaction only.

Since the rate of any reaction depends only on the concentration of reactants

And the order of reaction with respect to any reactant is the reaction coefficient of that reactant for elementary reactions

Hence for the reaction 

2 N2H4 + N2O4 --> 3N2 + 4 H2O

Rate = K X [N2H4 ]2 X [N2O4 ]1 = K X [N2H4 ]2 X [N2O4 ]

where [N2H4 ] = concentration of N2H4  

And [N2O4 ] = concentration of N2O4 

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