The following reaction of A 3 molecules is spontaneous. (a) Write a balanced equation for the reaction.

Hello everyone today we are given the following illustration that shows a hypothetical reaction between A. Which are the green spears and B. Which are the white spheres were asked which of the following best represents the reaction above. And so for green spheres or for a we have three of them and they are molecules they're paired up with each other so they're going to represented by that two symbol. And for our B. Or white spheres we have nine of those And those are also paired up. So it's gonna be denoted by B. two. And so these two are going to combine with one another to form six A. B. three molecules here. And so if we were to divide each of these by a common denominator, which one would it be? Well, each of these can be divisible by three. So if we take each of these and divided by three. So if we take three A two divided by three plus hour nine be to divide that by three as well as our six A. B. Three and divide that by three. We will end up with a two plus three. B two is going to produce two moles of a. B. Three. So with this given reaction, this perfectly aligns with answer choice A. I hope this helped. And until next time

Ch.9 - Thermochemistry: Chemical Energy

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McMurry 8th Edition

Ch.9 - Thermochemistry: Chemical Energy

Problem 43a

Chapter 9, Problem 43a

The following reaction of A₃ molecules is spontaneous. (a) Write a balanced equation for the reaction.

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Identify the reactants and products involved in the reaction of A_3 molecules.

Determine the stoichiometry of the reaction by considering the conservation of atoms.

Write the unbalanced chemical equation using the identified reactants and products.

Balance the equation by adjusting the coefficients to ensure the same number of each type of atom on both sides of the equation.

Verify that the balanced equation obeys the law of conservation of mass and that all coefficients are in the simplest whole number ratio.

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Key Concepts

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

Balanced Chemical Equation

A balanced chemical equation represents a chemical reaction where the number of atoms for each element is the same on both the reactant and product sides. This is achieved by adjusting the coefficients in front of the chemical formulas. Balancing is crucial as it adheres to the law of conservation of mass, ensuring that matter is neither created nor destroyed during the reaction.

Spontaneity of Reactions

The spontaneity of a reaction refers to its ability to occur without external influence once initiated. This is often determined by changes in Gibbs free energy (ΔG); a negative ΔG indicates a spontaneous process. Factors such as enthalpy, entropy, and temperature play significant roles in assessing whether a reaction will proceed spontaneously.

Molecular Composition

Understanding the molecular composition of reactants is essential for writing balanced equations. In this case, A<sub>3</sub> indicates that each molecule consists of three atoms of element A. Recognizing the molecular structure helps in predicting how these molecules will interact and combine during the reaction, which is vital for accurately representing the reaction in a balanced equation.

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The following reaction of A3 molecules is spontaneous. (a) Write a balanced equation for the reaction.

Verified video answer for a similar problem:

Key Concepts

Balanced Chemical Equation

Spontaneity of Reactions

Molecular Composition

The following reaction of A₃ molecules is spontaneous. (a) Write a balanced equation for the reaction.