The following mechanism has been proposed for the reaction of NO with H 2 to form N 2 O and H 2 O: NO(g) + NO(g) → N 2 O 2 (g) N 2 O 2 (g) + H 2 (g) → N 2 O(g) + H 2 O(g) (a) Show that the elementary reactions of the proposed mechanism add to provide a balanced equation for the reaction.

Hello everyone today. We are being asked to write an overall equation for the overall reaction using the above mechanism. So we have step one, step two and step three. So the first thing you want to do is you want to write these steps out? So we'll do just that will say we have to gas reacting to form two most of bromine bromine gas. We also have that bro mean gas forming with methane in the gas form to form hbr which is a strong acid in the gas form and Methane or methyl group in the gas form. And then we have that CH three reacting with our roaming from earlier To form this CH three be our product. And so we want to remember a couple of rules. The first one is that the same species? On the same side they're going to add and the same species this is going to be the reverse on different sides. So different sides, they are going to go ahead and subtract using that rule we can go ahead and proceed, we see that we have a we have one bro man on the right on the first equation and we have one brunette on the left for the second equation. Therefore they're going to cancel out. We also see in a second equation we have a CH three on the right of the arrow and we also have a CH three on the left of the arrow. Of the subsequent reaction? We were left with one bro mean in the first equation since we had to and only got rid of one. However, notice how the third reaction also has a bro mean, so we can go ahead and get rid of that second bro mean, and thus we are left with the remaining equation that we have our bro mean, gas, BR two gas plus our methane CH four, also in the gas, and that is going to go ahead and form CH three B are in our gas form as well as H. B. R. In the gas form as well. I hope this helped, and until next time.

Ch.14 - Chemical Kinetics

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Brown 14th Edition

Ch.14 - Chemical Kinetics

Problem 107a

Chapter 14, Problem 107a

The following mechanism has been proposed for the reaction of NO with H₂ to form N₂O and H₂O:
NO(g) + NO(g) → N₂O₂(g)
N₂O₂(g) + H₂(g) → N₂O(g) + H₂O(g)
(a) Show that the elementary reactions of the proposed mechanism add to provide a balanced equation for the reaction.

Verified step by step guidance

Step 1: Write down the two elementary reactions given in the mechanism. The first reaction is: NO(g) + NO(g) → N2O2(g). The second reaction is: N2O2(g) + H2(g) → N2O(g) + H2O(g).

Step 2: Add the reactants from both elementary reactions together. This gives: NO(g) + NO(g) + N2O2(g) + H2(g).

Step 3: Add the products from both elementary reactions together. This gives: N2O2(g) + N2O(g) + H2O(g).

Step 4: Cancel out any species that appear on both sides of the equation. In this case, N2O2(g) appears as both a reactant and a product, so it can be canceled out.

Step 5: Write the final balanced equation after canceling out common species. The balanced equation is: 2NO(g) + H2(g) → N2O(g) + H2O(g). This shows that the elementary reactions add up to provide the balanced equation for the overall reaction.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Elementary Reactions

Elementary reactions are the simplest types of chemical reactions that occur in a single step, involving a direct interaction between reactants to form products. Each elementary reaction has its own rate law, which can be derived from its molecularity, indicating how many molecules are involved in the reaction. Understanding these reactions is crucial for analyzing reaction mechanisms and determining the overall stoichiometry of a chemical process.

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms of each element is the same on both the reactant and product sides of the equation. This is based on the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. A balanced equation provides a clear representation of the reactants and products, allowing for accurate stoichiometric calculations.

Reaction Mechanisms

A reaction mechanism is a detailed description of the step-by-step process by which reactants are converted into products. It includes all elementary reactions involved, their sequence, and the intermediates formed during the reaction. Understanding the mechanism is essential for predicting the rate of reaction and the conditions under which the reaction occurs, as well as for deriving the overall balanced equation from the individual steps.