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IB Chemistry EE examples

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How does the amount of bioavailable lycopene in mg per 100 g of tomato pulp change with heat treatment for 15 minutes in 40, 60, 80, and 100 degrees Celsius, investigated with spectrophotometry using wavelengths of length 503 nm?
EEChemistryB
To what extent do the botanical origin of starch (Potato, Wheat, Rice, Cassava and Corn) and different concentrations of glycerol (5.6×10-5 , 1.7×10- 4 and 2.8×10-4 in moldm-3) contribute to improving the tensile strength (calculated through Young’s Modulus) and biodegradability (tested through soil burial test) of the biodegradable plastic produced?
EEChemistryB
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To what extent does the type of alcohol used in the Fischer-Speier esterification reaction affect the average rate of reaction as measured through back titration.
EEChemistryC
How does 5g of different types of oils (palm oil, avocado oil, castor oil, and olive oil) contribute to the production of soap bars with a pH level closest to 7 measured at constant temperature (50°C) and after constant time of refluxing (30 minutes) through the saponification process?
EEChemistryA
How does the concentration of harpagoside, which is identified by the surface area of the spot on the chromatography paper, changes in the equine mane over the period of one month after gradual consumption of the supplement “Devil’s claw”?
EEChemistryB
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How does the type of solvent (ethanol, propanone) and its solvent to water ratio (20%, 40%, 60%, 80%, 100% v/v) in the extraction of polyphenols via Ultrasound-Assisted Extraction (UAE), affect the total phenolic content extracted from rosemary (Rosmarinus officinalis), quantified by Folin-Ciocalteu Assay?
EEChemistryA
What effect does changing the concentration of the reagent, Chitosan Glycolate solution, have on the formation rate and the di↵usion coecient observed in the formation of Liesegang rings in the reaction of the Polymer-Analogous Transformation, from salt to base, of Chitosan?
EEChemistryA
How does varying the solution pH and sodium ethanoate concentration affect the rate and yield of ethane production from its electrolysis?
EEChemistryA
How does the application of different corrosion inhibitors (green tea extract, acrylic paint, chrome plating) on iron affect the amount of rust produced and the rate of corrosion of an iron nail in a 3.5% NaCl solution as measured through spectrophotometric and mass-loss methods?
EEChemistryA
Effect of storage temperature and time on the Vitamin C concnetration in citrus fruit juices
EEChemistryB
“How quick is the rate of neutralization of 5 cm3, 1 M sodium hydroxide by fatty acids, produced through the hydrolysis of milk fat, catalyzed by lipase enzyme from different seeds?”
EEChemistryB
How do benzodiazepine chemicals temazepam, triazolam, flurazepam, estazolam and midazolam, in certain anxiolytic and sleep-inducing pills, manipulate neurochemistry and metabolic rates to induce sleepiness and reduce insomnia?
EEChemistryC
How does varying the adsorption duration (5, 10, 15, 20, 25, 30 minutes) and eggshell powder adsorbent dosage (0.10, 0.15, 0.20, 0.25, 0.30, 0.35 grams) affect the manganese(VII) ions concentration in wastewater?
EEChemistryB
Which method of determination of the amount of copper in brass yields the most accurate result: iodometric titration, spectrophotometry or potentiometry?
EEChemistryB
Determining the Total Mass Phenolic and the Total Mass Flavonoid Contents of 5 Different Apple Varieties
EEChemistryB
How does varying steamed or non-steamed vegetables affect the content of iron present, including the effect on an anemic individual’s diet?
EEChemistryB
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To What Extent Does The pKa Of Natural Indicators, Isobestic Points And Transmittance Patterns Vary From The pKa Of The Universal Indicator? Analysis By A Spectrophotometer For Finding The Ideal Indicator By Prioritising Its Accessibility (Cost Of Vegetables) And Effectiveness For Agricultural Usage.
EEChemistryA
What effects does varying the identity and concentration of cation in salt solutions; Sodium chloride, Potassium chloride and Lithium chloride, have on aggregation of silver nanoparticles manufactured through a reduction reaction?
EEChemistryB
How does the yield of synthesis gas obtained from pyrolysis compare to gasification in the chemical recycling of polyethene and polypropene?
EEChemistryC
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To what extent does the concentration of sulfuric acid in a lead-acid cell affect the voltage at the end of a discharge cycle and the accumulation of lead sulfate on a lead electrode at standard thermodynamic conditions?
EEChemistryB
How does the storing time (8 years, 7 months, 5 months, 3 months, 1 month, 1 day) affect the composition of Coca-Cola drinks, considering H3PO4 concentration and sugar content?
EEChemistryC
Is the amount of sulfur dioxide in disposable chopsticks a potential health hazard?
EEChemistryC
An Investigation Into The Effect of Concentration of Primary Alcohols and Hexane and the effect of the amount of Carbon atoms within the alcohol to the Enthalpy of Combustion of the Mixture
EEChemistry
What is the effect of varying the amount of CaC03 needed to reverse the effects of acid rain the acidity of soil?"
EEChemistryC
To what extent does the Iodine value, and the acid value of the oil, and oxidative stability affect the hydrolysis rate of fatty acids in oil?
EEChemistryB
an investigation into the chemiluminescence of luminol
EEChemistry
Comparison Between the Effects of the Addition of Various Cations via Salt Solution on the Aggregation of Silver Nanoparticles Synthesized via the Reduction Method
EEChemistryB
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