Energy to sublimate one substance from a mixture of two solids

This post has been de-listed

It is no longer included in search results and normal feeds (front page, hot posts, subreddit posts, etc). It remains visible only via the author's post history.

Post Flair (click to view more posts with a particular flair)

Inorganic

Post Body

Say I have a mixture of two solids, A and B. I want to sublimate A (which has a lower melting/vaporization temperature) while leaving B behind.

I assume the heat capacity is a linear mixture of those of A and B and calculate the energy needed to raise the temperature of the mixture to the sublimation temp of A. Then say A has a sublimation enthalpy of 1000 kJ/kg. Is that the only energy I need to supply, or is more energy required because heat is going into the mixture of A & B and not just A? Is there a way to calculate this?

Author

Account Strength

90%

Account Age

14 years

Verified Email

Yes

Verified Flair

Total Karma

3,750

Link Karma

1,367

Comment Karma

2,383

Profile updated: 3 days ago

Posts updated: 4 months ago

kcannon13

Subreddit

r/chemhelp

Post Details

We try to extract some basic information from the post title. This is not always successful or accurate, please use your best judgement and compare these values to the post title and body for confirmation.

Posted: 3 years ago
Reddit URL: View post on reddit.com
External URL: reddit.com/r/chemhelp/co...