Home > Community > Why does sodium sulfate have an unusual solubility-temperature curve?
Upvote

30

Downvote
+ Solubility
Posted by
Mary Gallagher

Why does sodium sulfate have an unusual solubility-temperature curve?

Chris Harper  Follow

"Sodium sulfate" is a mixture of hydrated phases in shifting equilibrium given temperature and concentration.

Na2SO4.(H2O)x phase diagram, 1Na2SO4.(H2O)x phase diagram, 2

More

Upvote

VOTE

Downvote
Christie Aguilar  Follow

The phase diagram is also interesting here. Notice the convergence of three lines at about 30C and 30 wt% NaSO4, right near where the kink in the solubility happens.

enter image description here

More

Upvote

VOTE

Downvote
Eric Henderson  Follow
Do you still remember the source where you got this phase diagram?More
Upvote

VOTE

Downvote
Erik Bartsch  Follow
, 1954 [2]. [1]M. Angeli, R. Hébert, B. Menéndez, C. David, and J.-P. Bigas, ‘Influence of temperature and salt concentration on the salt weathering of a sedimentary stone with sodium sulphate’, Geological Society, London, More
Upvote

VOTE

Downvote
Greg Tatar  Follow
, 2010More
Upvote

VOTE

Downvote
Ferenc Valenta  Follow
, vol. 333, no. 1, pp. 35–42, Jan. 2010. [2]O. A. Hougen, K. W. Watson, and R. A. Ragatz, More
Upvote

VOTE

Downvote
Jane David  Follow
et al.More
Upvote

VOTE

Downvote
more replies