Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 35: Issue 7
Effects of admixtures of potassium bromide on the thermal decomposition of potassium bromate
Authors:
S. R. Mohanty P.G. Department of Chemistry Ravenshaw College Cuttack 753003 Orissa India

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D. Patnaik P.G. Department of Chemistry Ravenshaw College Cuttack 753003 Orissa India

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Pages:
2153–2159
Online Publication Date:
25 Jul 2005
Publication Date:
01 Nov 1989
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01911880
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The effects of admixtures of potassium bromide (2.5% and 5%) on the thermal decomposition of potassium bromate were studied within the temperature range 653–683 K. The fraction decomposed(α) vs. time (t) relations revealed (i) initial gas evolution, (ii) acceleratory and (iii) decay steps. The data were analysed on the basis of the first-order law with two rate constantsk1 andk2,k1 being the rate constant for the initial, slow first-order process (0.02, 0.26), andk2 being the rate constant for the subsequent faster process, holding within the range 0.21 to 0.98. Upon increase of the concentration of added potassium bromide to 5%, the range for the slow and faster processes became 0.01 to 0.16 and 0.1 to 0.98, respectively. At a given temperature,k1 increased with increasing bromide concentration, whereask2 almost identical for pure potassium bromate and its mixtures (2.5% and 5% bromide).

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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