2. Sucrose is a disaccharide composed of glucose and fructose
linked together. Hydrolysis of sucrose results in an equimolar
solution of glucose and fructose. The specific rotation of sucrose
is +66.5. If a solution of sucrose is completely hydrolyzed by
strong acid how would you expect the optical rotation of the
solution to change? Justify your answer.
3. If a mixture was made using 15 g of D-glucose and 15 g of
L-glucose in 100 mL of water, what would...
Honey is made from a mixture of fructose, glucose, and sucrose.
How can you use Benedict's reagent to determine the number of moles
of sucrose in a 1.0 g sample of honey? (Hint: If excess
Cu2+ is present the difference in [Cu2+]
before and after reaction is twice the concentration of reducing
sugar present.)
Honey is made from a mixture of fructose, glucose, and
sucrose. How can you use Benedict's reagent to determine the number
of moles of sucrose in a 1.0g sample of honey? (Hint: If excess
Cu2+ is present the difference in [Cu2+] before and after reaction
is twice the concentration of reducing sugar present.)
Sucrose is a disaccharide combination of the monosaccharides
glucose and fructose with the formula C12 H22O11. a) what is the
COD equivalent of 5g of sucrose? b) in a solution, there is 103
mg/L of sucrose, 5425 mg/L of glucose, and 31 mg/L of NH4Cl. What
is the COD of this solution?
In the Potter process, sucrose is converted to glucose and
fructose:
C12H22O11 + H2O → C6H12O6 + C6H12O6
The combined glucose and fructose is called inversion sugar. Fresh
feed flows at a rate of 0.5 ton/min containing 70% sucrose and 30%
water by mass. The fresh feed is combined with a recycle stream so
that the stream entering the reactor contains 5% inversion sugar by
mass. If 87% conversion of sucrose occurs,
determine:
A. the recycle stream flow
B. the...
The hydrolysis of sucrose (C12H22O11) into glucose and fructose
in acidic water has a rate constant of 1.8×10−4s−1 at 25 ∘C. You
may want to reference ( pages 622 - 658) Chapter 14 while
completing this problem. Part A Assuming the reaction is first
order in sucrose, determine the mass of sucrose that is hydrolyzed
when 2.65 L of a 0.120 M sucrose solution is allowed to react for
200 min .
Suppose that you have isolated the enzyme sucrase (able to
hydrolyze sucrose into glucose and fructose), and you wish to
determine the nature of inhibitor A for this enzyme. You have
prepared five different concentrations of substrate (sucrose), and
five different concentrations of inhibitor A (plus the control,
with zero mM of inhibitor A). The following Table lists the
inhibitor A concentrations [I], substrate concentrations [S], and
resulting enzyme velocities (Vo) for all six of these
experiments:
[I]
[S]
Vo...
(c) Hydrolysis of sucrose, S (C12H22O11), to glucose, G
(C6H12O6) and fructose, F (C6H12O6), in dilute aqueous solution is
given by: S + H2O -> G + F (i) If the reaction has one
elementary step as outlined above, what would be the order of this
reaction? Explain your answer. (ii) Outline the differential and
the integrated reaction rate laws. (iii) The concentration of
sucrose at time zero was 0.01 mol L -1 and at time 200 s 0.004 mol...
Discuss the chemical reactions that occurred between glucose,
fructose, xylose and sucrose and the 4 reagents(Benedict, Bial,
Seilwanoff and Molisch) which have resulted in color changes.
Describe how it occurs in full using the chemical makeup of the
reagents.
YOU MUST SEPARATE AND QUANTIFY GLUCOSE, FRUCTOSE, SUCROSE,
LACTOSE, MALTOSE, AND TREHALOSE IN SAMPLES OF INFANT FORMULA. YOU
DECIDE TO USE CHROMATOGRAPHY. YOUR METHOD MUST BE ABLE TO QUANTIFY
THE ANALYTES AT OR ABOVE 100 ng ON COLUMN. YOU HAVE DEVELOPED A
METHOD FOR EXTRACTINGFROM THE MATRIX A RELATIVELY CLEAN FRACTION
CONTAINING MONO AND DISSACHARIDES. YOU HAVE A WELL EQUIPPED
LABORATORY AND MANY ANALYTICAL INSTRUMENTS MENTIONED DOWN BELOW
THAT COULD BE USED TO ACCOMPLISH YOUR GOAL. THOSE INSTRUMENTS
ARE:
1.A...