Balance the following equations: (a) CaS(s) + H 2 O(l) → Ca(HS 2 ) 2 (aq) + Ca(OH) 2 (aq) (b) NH 3 (g) + O 2 (g) → NO(g) + H 2 O(g) (c) FeCl 3 (s) + Na 2 CO 3 (aq) → Fe 2 (CO 3 ) 3 (s) + NaCl(aq) (d) FeS 2 (s) + O 2 (g) → Fe 2 O 3 (s) + SO 2 (g)

Hey everyone, we're asked to provide the balance equation for the following reaction first. Let's go ahead and count the number of atoms we have on both sides. Starting off with our react inside, we have one of sulfur and four of oxygen in our product side. We have one of sulfur as well and three of oxygen. In order to balance this out, let's go ahead and start off with our product side. Now, if we add a two prior to our sulfur trioxide, We change our sulfur into two And our oxygen into six. Now looking at our react inside in order to balance out our equation. If we add a two prior to our sulfur dioxide, we end up with two of sulfur and six of oxygen as well. Now this is going to be our balanced chemical equation. So I hope this made sense and let us know if you have any questions.

Ch.3 - Chemical Reactions and Reaction Stoichiometry

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Brown 14th Edition

Ch.3 - Chemical Reactions and Reaction Stoichiometry

Problem 13

Chapter 3, Problem 13

Balance the following equations:
(a) CaS(s) + H₂O(l) → Ca(HS₂)₂(aq) + Ca(OH)₂(aq)
(b) NH₃(g) + O₂(g) → NO(g) + H₂O(g)
(c) FeCl₃(s) + Na₂CO₃(aq) → Fe₂(CO₃)₃(s) + NaCl(aq)
(d) FeS₂(s) + O₂(g) → Fe₂O₃(s) + SO₂(g)

Verified step by step guidance

Identify the number of each type of atom on both sides of the equation. For NH₃ + O₂ → NO + H₂O, count N, H, and O atoms.

Start by balancing the nitrogen (N) atoms. There is 1 N atom in NH₃ and 1 N atom in NO. They are already balanced.

Next, balance the hydrogen (H) atoms. There are 3 H atoms in NH₃ and 2 H atoms in H₂O. To balance, adjust the coefficients of NH₃ and H₂O.

Now, balance the oxygen (O) atoms. Count the O atoms in O₂, NO, and H₂O. Adjust the coefficients to ensure the same number of O atoms on both sides.

Check all atoms again to ensure they are balanced. Adjust coefficients as necessary to achieve a balanced equation.

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Key Concepts

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

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms for each element is the same on both 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. Coefficients are used to adjust the quantities of reactants and products to achieve balance.

Stoichiometry

Stoichiometry is the quantitative relationship between the amounts of reactants and products in a chemical reaction. It allows chemists to predict how much of each substance is needed or produced. Understanding stoichiometry is essential for balancing equations, as it provides the ratios in which substances react and form products.

Types of Chemical Reactions

Chemical reactions can be classified into several types, including synthesis, decomposition, single replacement, and combustion. Recognizing the type of reaction helps in predicting the products and understanding the changes occurring during the reaction. In the given equation, the reaction involves the combustion of ammonia, which produces nitrogen monoxide and water.