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IB Chemistry IA examples

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IsomerismBoiling PointsBuffersTemperature VariationsConcentration VariationsElectrochemistryVitamin CEquilibrium ConstantsReaction RatespH EffectsAntioxidant ContentActivation EnergyTitrationSolubilityTransition MetalsAcid-Base ReactionsRedox ReactionsSpectrophotometryOrganic ChemistryBiological Oxygen DemandEnthalpyCatalysts

All Chemistry IA Examples

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How does the pKa value of certain weak acids present in food (2.85, 2.99, 3.13, 4.10, 4.76) affect the loss in mass of calcium carbonate (in grams, measured using an electronic balance, ±0.01 g), and how does the addition of sodium fluoride solution affect this reaction, keeping the concentration and temperature of the acid solutions and sodium fluoride solutions, the time taken for the reaction and the surface area of the calcium carbonate chips controlled?
IAChemistryHL7
How does the source of caffeine (Lipton Earl Grey, Lipton Yellow Label, Remsey Earl Grey, Milton Earl Grey Classic) affect its content (in g), determined using the DCM-facilitated separation funnel technique?
IAChemistryHL7
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How does the distance from the city centre (1.3 km, 3.1 km, 4.1 km, 6 km, 7.1 km) affect the number of millimoles of the dissolved oxygen concentration in city ponds as measured by the Winkler Titration Method?
IAChemistrySL7
How does changing the current [3.0, 3.5, 4.0, 4.5, 5.0 A] in electrolysis affect the mass of products formed at the cathode in the electrolysis of copper and aluminium respectively?
IAChemistrySL7
What is the effect of changing temperatures (20, 40, 60, 80, 100 °C) on the amount of iodine remaining in iodized salt (in grams) after exposure to heat during cooking, as measured by an iodometric titration?
IAChemistryHL7
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What is the effect of boiling in 100°C and filtering using the carbon filter on the hardness of tap water (mol/dm3) as measured using EDTA complexometric titration?
IAChemistryHL7
What is the effect of the temperature (30, 40, 50, 60, 70 °C) on the buffering capacity (mol/dm3) of phosphate buffer, as measured using titration with 0.1 mol/dm3 HCl?
IAChemistrySL7
What is the effect of cooking temperature (10, 25, 40, 55, 70 °C) of Ipomoea aquatica on its concentration of iron (II) ions, as measured by the titration volume of 0.002M potassium permanganate solution required to completely oxidize iron (II) ions in a solution of Ipomoea aquatica after cooking it for 10 minutes?
IAChemistrySL7
How does light intensity (varied by using a UV Lamp at 365nm placed perpendicularly at 5.0cm, 10.0cm, 15.0cm, 20.0cm and 25.0cm away from the oil sample) affect the rate at which unsaturated fatty acids in 3.00g samples of sunflower oil undergoes rancidity due to exposure for a set duration of 30 hours, which will be quantified in peroxide value via an iodometric titration that compares rate of photosensitized oxidation?
IAChemistryHL7
What is the order of reaction between HCl and CaCO3, as determined by varying the concentration of HCl?
IAChemistryHL6
What is the enthalpy change in the reaction of sodium sulphate anhydrous to sodium sulphate decahydrate, by measuring their respective enthalpy change of solutions through calorimetry and using Hess’s Law?
IAChemistryHL6
What is the pseudo order of reaction with respect to Methyl Orange and order of reaction with respect to H2O2 in the degradation of Methyl Orange, in the presence of 365nm Ultraviolet Light, through the use of Ultraviolet-Visible Spectrometry (UV-Vis), for concentrations of Hydrogen Peroxide between 1.77 mmol dm-3 (3sf) and 0.110 mmol dm-3
IAChemistryHL6
24/24: Influence of Invertase Concentration on Sucrose Hydrolysis Rates in Kombucha Fermentation
IAChemistrySL7
How does varying the concentration ratio between two copper sulphate electrolytes from 1:1, 2:1, 10:1, 20:1, 100:1, 200:1, 1000:1, 2000:1, 10,000:1, 20,000:1, 100,000:1 and 200,000:1 affect the potential difference measured across a concentration cell with a voltmeter?
IAChemistryHL5
What is the relationship between temperature and rate of reaction of the reaction between solid 0.7g sodium carbonate and 15cm³ solution of 1M ethanoic acid, as measured by finding how the rate constants of the reaction change by measuring the volume of carbon dioxide gas produced in a gas syringe within 5 seconds at temperatures 22.0, 30.2, 40.2, 45.1 and 50.2°C, and what would the activation energy be?
IAChemistryHL6
How does varying voltage applied (1.0, 2.0, 3.0, 4.0, 5.0V) to a 1mol dm -3 NaOH-based alkaline water electrolytic cell using graphite electrodes in 900s affect the Faradaic efficiency (%) of its hydrogen evolution reaction?
IAChemistryHL7
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How does the presence of a catalyst (no catalyst, CuSO4) aûect the activa;on energy (kJ mol-1) of the bromate variation for the iodine clock, calculated by measuring the time taken (s) for the reaction to start forming a blue complex at various temperatures (25.0°C-45.0°C) produced by a temperature controlled water bath?
IAChemistryHL7
What is the order of reaction with respect to both Allura Red and sodium chlorate (I), by measuring changes in absorbance during the bleaching of Allura red through colourimetry?
IAChemistryHL7
What is the difference in calcium carbonate (CaCO3) concentration in different types of bird eggshells, i.e., chicken, quail, duck, goose, and ostrich, determined by the volume of NaOH used in a back titration?
IAChemistrySL5
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What is the relationship between solution temperature (K) and the decomposition rate (cm3*s-1) of hydrogen peroxide (H2O2), and, hence, what is the reaction9s activation energy (kJ*mol-1) measured by the slope in data between the two variables, and rate equation as determined by the rate difference between 3.0% and 1.5% concentrations?
IAChemistryHL7
How is the change in mass of the copper cathode and zinc anode influenced by varying voltage levels (2V, 4V, 6V, 8V, and 10V) in the electroplating process?
IAChemistrySL6
How effective are homemade photocatalysts, based on different metal-doped TiO2, in degrading methylene blue in water under UV light compared to commercially available TiO2?
IAChemistrySL2
Using the Winkler Method, how does the dissolved oxygen content of water collected from Bondivann lake change when the concentration of dissolved NaCl (0, 10, 20, 30, 40, 50 g/L) is varied?
IAChemistryHL7
To what extent do pH values (3, 4, 5, 6, 7) of the aqueous reaction mixture of glucose and lysine influence the maximum absorption value at 417.9 nm, as an indicator of the concentration of melanoidins, simulating the Maillard reaction in steaks?
IAChemistryHL6
How does the % of fatty acid composition of 5 fried cooking oil types (sunflower oil, rapeseed oil, corn oil, olive oil, and soybean oil) affect their enthalpy of combustion (ΔHC in kJ g-1), as assessed through the measurement of change in temperature in 3 minutes?
IAChemistryHL6
To investigate the effect of hydroxides (sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, ammonia) of different pKb on neutralization reactions with hydrochloric acid.
IAChemistrySL3
To what extent do the temperature (°C) and time (sec) affect the iodine content in iodized salt in terms of change in iodine ion mass (¿g) using iodometric titration?
IAChemistryHL6
What is the effect of thermal treatment (40, 50, 60, 80, 100 degrees Celsius) of buckwheat honey on 5-Hydroxymethylfurfural content, determined using a solution of honey with high performance liquid chromatography method with inverted phases and UV detection?
IAChemistryHL6
At what rate is the reaction rate between Zinc and Sulphuric Acid increasing when the temperature rises?
IAChemistrySL6
How does changing the temperature (± 0.5°C) (20.0°C,30.0°C,40.0°C,50.0°C,60°C) affect the rate of reaction (moldm-3s-1) of the reaction between Crystal Violet (5.0 x 10-5 mol dm-3) and Sodium Hydroxide (0.20 mol dm-3 ) measured using a colorimeter?
IAChemistryHL6
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To what extent is there a relationship between the temperature (25.0°C, 50.0°C, 80.0°C) of various citrus juices (orange, lemon, lime) and their vitamin C (ascorbic acid) concentration measured by redox titration?
IAChemistryHL6
How does the carbon chain length in alcohols (methanol, ethanol, propan-1-ol, butan-1-ol, pentan-1-ol) affect the enthalpy of combustion, measured through the calorimetry method by burning each fuel for 120 seconds and measuring the temperature change of 100g of distilled water?
IAChemistryHL7
What is the average rate of reaction (cm^3 s^-1) of 0.5 g of crushed antacids (CaCO3 and MgCO3) in HCl solutions of varying concentrations (0.050mol.dm^-3, 0.100mol dm^-3, 0.250mol dm^-3, 0.500mol dm^-3, 1.000mol dm^-3), measured through the production of CO2 (cm^3) in 2 minutes?
IAChemistryHL6
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What is the effect of increasing the storage temperature from 20 - 80℃ on the stability of a water-based Vitamin C serum of 20% concentration (in mol dm-3), as determined by measuring the concentration of ascorbic acid remaining in a 0.01 mol dm-3 Vitamin C solution after being stored at each temperature for 30 minutes using an iodometric titration technique?
IAChemistryHL7
What is the effect of changing temperatures (10.00, 20.00, 30.00, 40.00, 50.00°C) on the equilibrium constant, Kc, for the reaction between 0.002 mol dm-3 iron(III) nitrate and 0.002 mol dm-3 potassium thiocyanate?
IAChemistryHL7
How is the Dissolved Oxygen Content (measured in ppm) of a 200 cm3 freshwater sample affected by a change in temperature (35°C to 75°C, in 10°C intervals), carried out via a water bath for 360 seconds, as measured by the volume of sodium thiosulphate (0.05 mol dm-3) reacted in Winkler’s iodine-sodium thiosulphate LtraLon?
IAChemistrySL7
How do different active ingredients (calcium carbonate, calcium carbonate and magnesium carbonate, and aluminium hydroxide and magnesium carbonate) in different brands of indigestion tablets (antacids A, B, and C) compare in the volume (cm3) of 1M HCl they can neutralise through acid-base titration?
IAChemistrySL4
Investigating Caffeine Mass in Tea with different Brewing Times using liquid-liquid extrac'on
IAChemistrySL6
How does varying the pH (3.00 ± 0.01, 5.00 ± 0.01, 7.00 ± 0.01, 9.00 ± 0.01, 11.00 ± 0.01) affect the kinetics of zinc oxide catalyzed photodegradation of methylene blue dye solution?
IAChemistryHL5
Investigating the reaction rate of varying concentrations of Household Bleach on Blue Food Dye
IAChemistryHL6
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