Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures

Abstract Hydrolysis reaction was carried out at varying NaOH concentrations of 0.008, 0.016 and 0.024 M, variable temperature of 6 and 21 °C, and constant initial crystal violet (CV) concentration of 2.6 × 10–5 M. Kinetic data of the reaction were generated using UV–Vis Spectrophotometer. Analysis o...

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Autores principales:	Nurudeen Salahudeen, Adamu A. Rasheed
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bc8c47031d3b45119a38bd3d0066210b
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spelling	oai:doaj.org-article:bc8c47031d3b45119a38bd3d0066210b2021-12-02T12:40:40ZKinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures10.1038/s41598-020-78937-42045-2322https://doaj.org/article/bc8c47031d3b45119a38bd3d0066210b2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78937-4https://doaj.org/toc/2045-2322Abstract Hydrolysis reaction was carried out at varying NaOH concentrations of 0.008, 0.016 and 0.024 M, variable temperature of 6 and 21 °C, and constant initial crystal violet (CV) concentration of 2.6 × 10–5 M. Kinetic data of the reaction were generated using UV–Vis Spectrophotometer. Analysis of the reaction kinetics shows that the overall rate order of the hydrolysis reaction was 1st order. The individual rate order of the reaction with respect to NaOH and CV was temperature dependent. At 21 °C the rate order with respect to NaOH and CV were 0.24th and 0.76th, respectively. While at 6 °C the individual rate order were 0.38th and 0.62th with respect to NaOH and CV, respectively. Values of the reaction rate constant (k) at 21 and 6 °C were 7.2 and 1.9 $$\left( {\frac{{{\text{mol}}}}{{\text{L}}}} \right)^{{ - 0.9}} min^{-1}$$ mol L - 0.9 m i n - 1 , respectively. The activation energy of the reaction was determined as 60.57 kJ/mol. The reaction was an endothermic reaction having enthalpy values of 58.13 and 58.29 kJ/mol at 21 and 6 °C, respectively. The entropy and Gibbs free energy of the hydrolysis reaction at ambient temperature of 21 °C were − 64.72 J/mol K and 77.15 kJ/K, respectively. At 6 °C the entropy and Gibbs free energy of the reaction were − 64.29 J/mol K and 76.19 kJ/K, respectively.Nurudeen SalahudeenAdamu A. RasheedNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nurudeen Salahudeen Adamu A. Rasheed Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
description	Abstract Hydrolysis reaction was carried out at varying NaOH concentrations of 0.008, 0.016 and 0.024 M, variable temperature of 6 and 21 °C, and constant initial crystal violet (CV) concentration of 2.6 × 10–5 M. Kinetic data of the reaction were generated using UV–Vis Spectrophotometer. Analysis of the reaction kinetics shows that the overall rate order of the hydrolysis reaction was 1st order. The individual rate order of the reaction with respect to NaOH and CV was temperature dependent. At 21 °C the rate order with respect to NaOH and CV were 0.24th and 0.76th, respectively. While at 6 °C the individual rate order were 0.38th and 0.62th with respect to NaOH and CV, respectively. Values of the reaction rate constant (k) at 21 and 6 °C were 7.2 and 1.9 $$\left( {\frac{{{\text{mol}}}}{{\text{L}}}} \right)^{{ - 0.9}} min^{-1}$$ mol L - 0.9 m i n - 1 , respectively. The activation energy of the reaction was determined as 60.57 kJ/mol. The reaction was an endothermic reaction having enthalpy values of 58.13 and 58.29 kJ/mol at 21 and 6 °C, respectively. The entropy and Gibbs free energy of the hydrolysis reaction at ambient temperature of 21 °C were − 64.72 J/mol K and 77.15 kJ/K, respectively. At 6 °C the entropy and Gibbs free energy of the reaction were − 64.29 J/mol K and 76.19 kJ/K, respectively.
format	article
author	Nurudeen Salahudeen Adamu A. Rasheed
author_facet	Nurudeen Salahudeen Adamu A. Rasheed
author_sort	Nurudeen Salahudeen
title	Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
title_short	Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
title_full	Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
title_fullStr	Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
title_full_unstemmed	Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
title_sort	kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/bc8c47031d3b45119a38bd3d0066210b
work_keys_str_mv	AT nurudeensalahudeen kineticsandthermodynamicsofhydrolysisofcrystalvioletatambientandbelowambienttemperatures AT adamuarasheed kineticsandthermodynamicsofhydrolysisofcrystalvioletatambientandbelowambienttemperatures
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Kinetics and thermodynamics of hydrolysis of crystal violet at ambient and below ambient temperatures

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