For each of the following equilibrium systems, find the number of degrees of fre
ID: 574416 • Letter: F
Question
For each of the following equilibrium systems, find the number of degrees of freedom f. (Omit consideration of water ionization.) (a) An aqueous solution of sucrose. (b) An aqueous solution of sucrose and ribose. (c) Solid sucrose and an aqueous solution of sucrose and ribose. (d) Solid sucrose, solid ribose, and an aqueous solution of sucrose and ribose. (e) Liquid water and water vapor. ( An aqueous sucrose solution and water vapor. g) Solid sucrose, an aqueous sucrose solution, and water vapor. (h) Liquid water, liquid benzene (these two liquids are essentially immiscible), and a mixture of the vapors of these two liquids.Explanation / Answer
A phase is a distinctive form of matter. It can be solid,liquid or gas . All physical properties and chemcal properties are uniform. A phase rule deals with the hetergeneous system. Phase rule is given as follows:
F = C-P+2
Here, F is number of degree of freedom, C is the number of components, P is the number of phases.
a) an aqueous solution of sucrose
Two components (Water and Sucrose) and one phases (Saturated solution of sucrose )
F = 2-1+2 = 3
b) An aqueous solution of sucrose and ribose
Three components (Water, Sucrose and ribose) and one phases (Saturated solution of sucrose & ribose )
F = 3-1+2 = 4
c) Solid sucrose and an aqueous solution of sucrose and ribose
Three components (Water , Solid Sucrose, ribose) and Two phases (Saturated solution of sucrose & ribose and solid sucrose)
F = 3-2+2 = 3
d) Solid sucrose, Solid ribose and an aqueous solution of sucrose and ribose
Three components (Water, Solid Sucrose, solid ribose) and Three phases (Saturated solution of sucrose & ribose and solid sucrose & ribose)
F = 3-3+2 = 2
e) Liquid water and water vapour
One components (Water) and Two phases (Liquid and vapour)
F = 1-2 +2 = 1
f) An aqueous sucrose solution and water vapour
Two components (Water and sucrose) and Two phases (Saturated Sucrose and vapour)
F = 2-2 +2 = 2
g) Solid sucrose, an aqueous sucrose solution and water vapor
Two components (Water and solid sucrose) and Three phases (saturated Sucrose, solid sucrose and vapour)
F = 2-3 +2 = 1
h) Liquid water , liquid benzene, and mixture of the vapours of these two liquid
Two components (Water, liquid benzene) and Three phases (Liquid water & benzene and vapour)
F = 2-3 + 2 = 1
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