Question

Calculate the number of phases, components and degrees of freedom
present in the reactions
(i) CaCO3(s ) ↔ CaO(s)
CO2(g)

Answer 1

Answer:

In reactions:

a) FeO(g)+CO(g)-> Fe(s)+(CO2)g

b) water solution of AlCl3

determine

f

,

c

and

p

based on Gibb's phase rule where

f

is the number of degrees of freedom,

c

is the number of components and

p

is the number of phases in thermodynamic equilibrium with each other.

Answer 2

Three phases ,two component and one degree of freedom is present in the reaction

$Caco_{3}$ ⇄ $CaO_{(s)} + Co_{2(g)}$

Explanation:

Gibbs phase rule:

It specifies that "The number of degrees of freedom (F) of the system is related to the number of components (C) and phases (P) by the phase rule equation if the equilibrium between any number of phases

It is not influenced by gravity, electrical, magnetic forces, or surface action and is only influenced by temperature, pressure, and concentration.

F=C−P+2

for any system at a specific temperature and pressure in equilibrium ",

For the given equation

$Caco_{3}$ ⇄ $CaO_{(s)} + Co_{2(g)}$

No of phases:

There are three phases to it

• Two solids
• One gaseous.

Components:

• The composition of each of the three phases in the thermal breakdown of CaCO3.
• It can be denoted by at least two of the independently changing constituents, CaCO3, CaO, and CO2.
• As a result, the system is divided into two parts.

Degree of Freedom:

It is given by the formula,

F=C−C+2

=2−3+2

=−1+2

F=1

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