Elemental phosphorus exists as molecules of P 4 . It reacts with Cl 2 (g) to produce phosphorus pentachloride. a. Write the balanced chemical equation for this reaction.

Hello. And this prom we're told the elemental sulfur which exists as a solid S eight and oxygen gas react to form sulfur dioxide gas. Grass. What is the balanced reaction equation? So we have sulfur Which exists is as eight, is it solid reacts with oxygen gas? And we form sulfur dioxide. So we have one sulfur and based on the prefix di means two, we have two oxygen's. So we'll begin by balancing the sulfur. So we'll add a coefficient of eight out in front of the sulfur dioxide. We now have eight times two is 16 oxygen's on the product side. So we'll add a coefficient of eight out in front of the oxygen to balance the oxygen. This balanced reaction then corresponds to answer B. Thanks for watching. Hope this help.

Ch.6 Chemical Reactions: Mole and Mass Relationships

McMurry - Fundamentals of GOB 8th Edition

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McMurry 8th Edition

Ch.6 Chemical Reactions: Mole and Mass Relationships

Problem 67a

Chapter 6, Problem 67a

Elemental phosphorus exists as molecules of P₄. It reacts with Cl₂(g) to produce phosphorus pentachloride.
a. Write the balanced chemical equation for this reaction.

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Identify the reactants and products in the reaction. The reactants are phosphorus (P4) and chlorine gas (Cl2), and the product is phosphorus pentachloride (PCl5).

Write the unbalanced chemical equation: P₄ + Cl₂ → PCl₅.

Balance the phosphorus (P) atoms first. Since there are 4 phosphorus atoms in P₄, you will need 4 PCl₅ molecules on the product side. The equation becomes: P₄ + Cl₂ → 4PCl₅.

Next, balance the chlorine (Cl) atoms. Each PCl₅ molecule contains 5 chlorine atoms, so 4 PCl₅ molecules will require 20 chlorine atoms. Since Cl₂ is diatomic, you will need 10 Cl₂ molecules. The equation becomes: P₄ + 10Cl₂ → 4PCl₅.

Verify that the equation is balanced by checking the number of atoms of each element on both sides. There are 4 phosphorus atoms and 20 chlorine atoms on both sides, so the equation is balanced.

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Key Concepts

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

Chemical Equation

A chemical equation represents a chemical reaction using symbols and formulas. It shows the reactants on the left side and the products on the right, with an arrow indicating the direction of the reaction. Balancing the equation ensures that the number of atoms for each element is the same on both sides, adhering to the law of conservation of mass.

Balancing Chemical Equations

Balancing chemical equations involves adjusting the coefficients of reactants and products to ensure that the total number of atoms for each element is equal on both sides of the equation. This process often requires trial and error, and it is essential for accurately representing the stoichiometry of the reaction, which is crucial for predicting the amounts of substances consumed and produced.

Phosphorus Pentachloride (PCl5)

Phosphorus pentachloride is a chemical compound formed from phosphorus and chlorine, represented by the formula PCl5. It consists of one phosphorus atom bonded to five chlorine atoms. Understanding its formation from elemental phosphorus and chlorine gas is key to writing the balanced equation for the reaction, as it highlights the stoichiometric relationships between the reactants and products.

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Elemental phosphorus exists as molecules of P4. It reacts with Cl2(g) to produce phosphorus pentachloride. a. Write the balanced chemical equation for this reaction.

Verified video answer for a similar problem:

Key Concepts

Chemical Equation

Balancing Chemical Equations

Phosphorus Pentachloride (PCl5)

Elemental phosphorus exists as molecules of P₄. It reacts with Cl₂(g) to produce phosphorus pentachloride.
a. Write the balanced chemical equation for this reaction.