Summer Schedule for 2011

The IEI has released dates for the examinations of Summer 2011. Please do find the same here:

Amie 2011 Summer Tt

with warm regards

AllMyPosts

Question about Degrees of Freedom

Hello Everyone,

For those who are new here, this blog is about AMIE study materials, info & notes.Currently I am going through Material Science. So all I post here are related to Material Science for next few days.

I have been going through old question papers, wherein there is a peculiar question which can be stated as "Calculate degree's of freedom in water and ice under 1 atm pressure?".

I have some difficulty in answering this question. Please help me by telling me which among the following is right?

Answer 1)

Gibbs phase rule says F = C - P + 2. Here C = 1, P = 2 at 1 atm pressure hence F = 1

Answer 2)

Gibbs phase rule says F = C - P + 2 but since pressure is constant the formula becomes F = C - P + 1 hence F = 0 with C = 1 & P = 2. 

I am not sure of the answer. Please do help me to decide on the same by suggesting your answer and proof if any.

with warm regards

allmyposts