An orange juice is thermally processed for determining ascorbic acid degradation kinetics. After different temperature experiments, the following ascorbic acid concentration values were obtained: Ascorbic Acid (mg/L)Processing Time (second) 015306090120Temperature (oC)75558.3546.5535526.5519.6508.685608.6595.2587.4572.7557.5542.395612.6601.5588.2546.1521.8509.5 According to the results;Determine ascorbic acid degradation orderDerive the equations related to the degradation order (general equation and t1/2)Calculate k-values at the constant processing temperaturesCalculate activation energy (Ea) of the degradation reactionCalculate half-life time of ascorbic acid for all processing (For better evaluation, add figures for the addressed questions, if necessary)

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Answered: An orange juice is thermally processed…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter14: Chemical Kinetics: The Rates Of Chemical Reactions

Section14.7: Reaction Mechanisms

Problem 1.2ACP

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An orange juice is thermally processed for determining ascorbic acid degradation kinetics. After different temperature experiments, the following ascorbic acid concentration values were obtained:

*Ascorbic Acid (mg/L)*
Processing Time (second)
		0	15	30	60	90	120
Temperature (^oC)	75	558.3	546.5	535	526.5	519.6	508.6
85	608.6	595.2	587.4	572.7	557.5	542.3
95	612.6	601.5	588.2	546.1	521.8	509.5

According to the results;

Determine ascorbic acid degradation order
Derive the equations related to the degradation order (general equation and t_1/2)
Calculate k-values at the constant processing temperatures
Calculate activation energy (Ea) of the degradation reaction
Calculate half-life time of ascorbic acid for all processing

(For better evaluation, add figures for the addressed questions, if necessary)

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