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Chapter 21: Problem 22

Write a balanced equation for the preparation of (a) \(\mathrm{N}_{2}\) from \(\mathrm{Pb}\left(\mathrm{N}_{3}\right)_{2}\) (b) \(\mathrm{O}_{2}\) from \(\mathrm{O}_{3}\) (c) \(\mathrm{S}\) from \(\mathrm{H}_{2} \mathrm{~S}\)

Short Answer

Expert verified
Question: Write balanced chemical equations for the preparation of the following elements: (a) Nitrogen (N2) from Lead Azide (Pb(N3)2) (b) Oxygen (O2) from Ozone (O3) (c) Sulfur (S) from Hydrogen Sulfide (H2S). Answer: (a) 3Pb(N3)2 → 6N2 + 2Pb (b) 2O3 → 3O2 (c) 2H2S → S2 + 2H2

Step by step solution

01

Write unbalanced equation

Write the equation with the reactant and product: Pb(N3)2 -> N2
02

Balance the equation

Balancing the equation requires multiplying the reactants or products with coefficients as needed to ensure an equal number of atoms on both sides of the equation. 3Pb(N3)2 -> 6N2 + 2Pb
03

Finalize the balanced equation

The balanced equation for the preparation of N2 from Pb(N3)2 is: 3Pb(N3)2 → 6N2 + 2Pb (b) Preparation of O2 from O3
04

Write unbalanced equation

Write the equation with the reactant and product: O3 -> O2
05

Balance the equation

Balancing the equation requires multiplying the reactants or products with coefficients as needed to ensure an equal number of atoms on both sides of the equation. 2O3 -> 3O2
06

Finalize the balanced equation

The balanced equation for the preparation of O2 from O3 is: 2O3 → 3O2 (c) Preparation of S from H2S
07

Write unbalanced equation

Write the equation with the reactant and product: H2S -> S
08

Balance the equation

Balancing the equation requires multiplying the reactants or products with coefficients as needed to ensure an equal number of atoms on both sides of the equation. 2H2S -> S2 + 2H2
09

Finalize the balanced equation

The balanced equation for the preparation of S from H2S is: 2H2S → S2 + 2H2

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