1957
DOI: 10.1139/v57-191
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The Heat Capacities of the Crystalline and Vacuum Dehydrated Form of Magnesium Sulphate Monohydrate

Abstract: Dehydration, under vacuum, of magnesium sulphate heptahydrate yields a product of monohydrate composition which does not give a diffraction pattern on X-ray examination and therefore has no evident crystalline structure. The heat capacity of this product has been determined over the temperature range from 90°K. to room temperature, and has been found to be substantially higher than that of the normal crystalline monohydrate. Consideration of these differences in heat capacity in conjunction with surface area d… Show more

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Cited by 10 publications
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“…The magnitude of the error introduced by this assumption is not known exactly but is likely not large, because the temperature range spanned is less than 100 K wide. Nevertheless, now we have experimental data for the important Mg-sulfate hydrates kieserite (Frost et al, 1957), starkeyite (this study), hexahydrite (Cox et al, 1955), and epsomite (Gurevich et al, 2007). For starkeyite, the data reported in this study in the temperature region T = 229-303 K (cf.…”
Section: Refinement Of the Thermodynamic Datamentioning
confidence: 79%
“…The magnitude of the error introduced by this assumption is not known exactly but is likely not large, because the temperature range spanned is less than 100 K wide. Nevertheless, now we have experimental data for the important Mg-sulfate hydrates kieserite (Frost et al, 1957), starkeyite (this study), hexahydrite (Cox et al, 1955), and epsomite (Gurevich et al, 2007). For starkeyite, the data reported in this study in the temperature region T = 229-303 K (cf.…”
Section: Refinement Of the Thermodynamic Datamentioning
confidence: 79%
“…However, with this f coefficient, most of the C p data of Frost et al (1957) are underestimated (Fig. 3).…”
Section: Heat Capacity and Entropy Of Kieserite Mgso 4 áH 2 Omentioning
confidence: 93%
“…The heat capacity of kieserite was measured between 51 and 298 K by Frost et al (1957). Unfortunately, they published no numerical data from their measurements.…”
Section: Heat Capacity and Entropy Of Kieserite Mgso 4 áH 2 Omentioning
confidence: 99%
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