Abstract
<p> Cu(II) carbonate complexation was examined in natural seawater between 5° and 35°C. The reaction enthalpy for the equilibrium Cu <sup> 2 </sup> + CO <sub> 3 </sub> <sup> 2− </sup> ⇌ CuCO <sub> 3 </sub> <sup> 0 </sup> , expressed in terms of total carbonate ion concentration, is ∼2.5 kcal mol <sup> −1 </sup> . The formation constant <sub> sw </sub> <em> β </em> <sub> 1 </sub> = [CuCO <sub> 3 </sub> <sup> 0 </sup> ] [Cu <sup> 2+ </sup> ] <sup> −1 </sup> CO <sub> 3 </sub> <sup> 2− </sup> ] <sub> T </sub> <sup> −1 </sup> , expressed in terms of total carbonate ion concentration in seawater, thus decreases by about 25% between 25° and 5°C.</p>
Original language | American English |
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Journal | Limnology and Oceanography |
Volume | 34 |
DOIs | |
State | Published - Jan 1 1989 |
Disciplines
- Life Sciences