Q.

What does Gibb’s phase rule state?

A. p+f=c-1
B. p+f=c+1
C. p+f=c-2
D. p+f=c+2
Answer» D. p+f=c+2
Explanation: the above phase rule is a formula that gives the condition for finding the number of phases in a system. this phase rule can be applied to both condensed as well as normal systems.
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