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sucrose - K I N G F A H D U N I V E RS I T Y O F PE T RO LE...

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KI N G F A H D U N I V ERS I T Y O F PET RO LEU M & M I N ERA LS CH EM I S T RY D EPA RT M EN T EXPERIMENTS IN PHYSICAL CHEMISTRY CHEM-311 P re p a re d F o r Dr.Hwang E X P # 7 k in e tic s o f c a n e s u g a r (s u c ro s e ) in ve rs io n D O N E BY : Al-Juhani, Abdul-Rahman s . ID# 945826 S E C .# : 5 2 D ate O f P er for m ance: 26/10/97 D ate O f Subm ission: 2/11/97
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INTRODUCTION I-Objective:- -To obtain the specific rotation of sucrose. -To obtain the order and rate constant of the hydrolysis reaction of sucrose. II-Theory:- The specific rotation is expressed as [ ] α λ τ where α is the angle through which the plane of rotated by a column of solution 100 mm in length, containing 1g of substance per cm 3 at 20 ° C. If the rotation is consumed to be proportional to the concentration, C, then: [ ] α α λ 20 o C C = In this experiment we study the kinetics of:- Sucrose Glu e Fructose C H O H O H C H O C H O H 12 22 11 2 6 12 6 6 12 6 + + + + + + cos Cane sugar is dextro-rotatory, but the mixture of glucose and fructose resulting from inversion is leavo-rotatory. So, the decrease in
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