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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Twickel on November 12, 2012, 10:24:44 AM

Title: Using phase diagrams to calculate compositions.
Post by: Twickel on November 12, 2012, 10:24:44 AM

Hi
Attached is an image of eutetic phase diagram, how do I figure out the compositions at 200 degrees celcius, I tried for 180 but my answers did not match. First what I did was 50% mol ratio so first, draw a line from 200 degrees to match with 50 % ATOMIC Sn. Then since the question wants % WEIGHTS, do I connect the tie lines to the bottom axis if so then what.
Thanks