Engineering Chemistry: Unit III: a. Phase Rule
Irreversible and Reversible reaction
All the chemical reactions can be broadly classified into two types.
Unit - II
Chapter 3
Phase rules
INTRODUCTION
All the chemical reactions can be broadly classified into two
types.
1. Irreversible reaction:
Zn + H2SO4 → ZnSO4 + H2↑
2. Reversible reaction
(a) Homogeneous reversible reaction
N2(g) + 3H2(g) ⇌ 2NH3(g)
(b) Heterogeneous
reversible reaction
CaCO3(s) ⇌ CaO(s) + CO2(g)
The reversible reactions are represented by two arrows in opposite
directions.
The homogeneous reversible reactions can be studied using the law
of mass action. But the heterogeneous systems require different methods. The
phase rule, given by Willard Gibbs (1874), is used to study the behavior
of heterogeneous reversible reactions.
Engineering Chemistry: Unit III: a. Phase Rule : Tag: Engineering Chemistry : - Irreversible and Reversible reaction
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Related Subjects
Engineering Chemistry
CY3151 1st Semester | 2021 Regulation | 1st Semester Common to all Dept 2021 Regulation