English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The heat capacities of synthetic alunite have been measured between 16 and 375 K by quasi-adiabatic low-temperature calorimetry. Our best estimate for the entropy of stoichiometric alunite [KA1 3 (S04 ) 2 (OH)J is 321.0 ± 5.0 J-moT^K" 1 at 298.15 K. We have revised the reaction scheme and recalculated the enthalpy of formation of alunite as -5176.5 ± 2.4 kJ-mol" 1 . The experimental data from which both of these results were derived are based on measurements of the properties of synthetic alunite that most likely were not stoichiometric. Corrections have been applied, but significant assumptions have been necessary. Therefore, the values given here, although the best currently available, must be considered to be preliminary.

Heat capacity and enthalpy of formation of synthetic alunite