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IB Chemistry HL 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 HL IA Examples

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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
New Syllabus
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
New Syllabus
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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
New Syllabus
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
New Syllabus
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
New Syllabus
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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
New Syllabus
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
New Syllabus
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
New Syllabus
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
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
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
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
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 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
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
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
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Investigating the reaction rate of varying concentrations of Household Bleach on Blue Food Dye
IAChemistryHL6
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
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
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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
How do the Temperatures of 30.0°C, 40.0°C, 50.0°C, 60.0°C, and 70.0°C of Branded Orange Juice Affect its Vitamin C Concentration in mol.dm-3, measured with a redox titration, using an iodine solution concentration of 0.005 mol.dm-3?
IAChemistrySL5
How does temperature – 283, 293, 303, 313, 323, 333 (K ± 0.1) – affect the equilibrium constant (Kc) of the iron (III) thiocyanate solution equilibrium, determined by measuring the absorbance (± 0.01) of a 470 nm wavelength using a Vernier colorimeter.
IAChemistryHL5
How do varying temperatures (15.0℃, 20.0℃, 25.0℃, 30.0℃, 35.0℃ ± 0.5℃) affect the buffer capacity of pH-balancing facial cleansers when titrated with 0.05mol HCl, measured using a pH probe with its ability resist changes in pH value of the 1 based on the volume of HCl titrated?
IAChemistryHL5
Which is the optimal incubation temperature in between 2-35 ∞C for the oxidation of ethanol in order to figure out the concentration of ethanol in Albani Odense Classic beers by performing a redox back titration with sodium thiosulfate? And how does that value compare to the theoretical one, which appears in the beer can?
IAChemistryHL6
How does the varying concentrations of hydrogen peroxide affect the initial and average redox reaction rate between sodium thiosulfate and hydrogen peroxide in an alkaline condition by measuring the change in pH using a pH meter?
IAChemistryHL7
What is the correlation between electric current and the amount of mass that is electroplated, and, hence, is there an optimum current?
IAChemistryHL6
To what extent does the activation energy of an iodine clock reaction change when catalyzed by Copper (II) sulfate (CuSO4)?
IAChemistryHL5
What is the effect of changing the cooking temperature (25.0 °C, 55.0 °C, 70.0 °C, 85.0 °C, and 100.0 °C) on the amount of iron (Fe2+) that leaches from Spinacia Oleracea, using a redox titration?
IAChemistryHL7
How does temperature (at 25 oC – 65 oC with 10oC intervals) affect the equilibrium constant for the reversible reaction between tetrachlorocobalt(II) [CO(Cl)4]2- and hexaaquacobalt(II) [Co(H2O)]2+?
IAChemistryHL6
What effect does the temperature of the solution (K) have on the rate of decomposition (cm3 s -1) of carbonic acid (H2CO3) to carbon dioxide (CO2) and water (H2O) and therefore what is the activation energy (kJmol-1) of this reaction?
IAChemistryHL6
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The effect of halogen electronegativity, number of halogen atoms, and distance from the acidic hydrogen on the pKa of carboxylic acids.
IAChemistryHL7
What is the difference in activation energy (kJmol!") between the uncatalyzed and Iron (II) Sulfate (FeSO#) catalyzed oxidation of iodide ions by potassium iodate (KIO$) in the iodate variation of the iodine clock reaction, determined by analyzing the rate of reaction at different temperatures (10.0°C, 20.0°C, 30.0°C, 40.0°C, 50.0°C)?n
IAChemistryHL7
Which d-block metal catalyst from Zinc(II) Sulfate(ZnSO4) and Manganese(II) Sulfate(MnSO4) will lower the activation energy (kJmol-1) the most in the reaction between Sodium Thiosulfate and Iron(III) nitrate, by calculating the time taken for the completion of the reaction at varying temperatures of 25°C, 30°C, 35°C, 40°C, 45°C?
IAChemistryHL7
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How do different shelf lives (t = 6 months, 12 months, 24 months, 36 months, 48 months) of common polish cooking oils: [flaxseed oil (LenVitol), Sesame oil (Diamond), Canola Oil (Kujawski), Olive Oil (Antico Frantoio), coconut oil (Enerbio)] affect their iodine value (𝐼𝑉 [𝑔] ∈ [12.39 ∪ 194.72] ± 1.3), measured by back-to-back titration of the oil sample dissolved in acetone (C3H6O, 99.5%) reacted by iodine solution (KI3, 0.050 𝑚𝑜𝑙 ∙ 𝑑𝑚−3) with sodium thiosulfate (Na2S2O3, 0.100 𝑚𝑜𝑙 ∙ 𝑑𝑚−3) in the presence of a starch indicator under constant pressure 1013.00 hPa ± 0.13 hPa and in air temperature 20.00°C ± 0.05°C?
IAChemistryHL7
How does the increase in temperature (30.0oC, 35.0oC, 40.0oC, 45.0oC, 50.0oC) of a solution of tetraborate (B4O5(OH)4) 2- (aq) effect the volume (cm3 ) of 0.100M HCl(aq) required to titrate it, and on the solubility equilibrium constant (Ksp), using titration?
IAChemistryHL6
How does temperature affect the critical micelle concentration (CMC) of the common ionic surface active agent (surfactant) sodium dodecyl sulphate measured by using the change in the rate of conductivity as concentration is increased?
IAChemistryHL7
How does increasing the temperature of a 0.01M NaOH solution affect the rate of hydrolysis of 0.01M acetylsalicylic acid as measured by the spectrophotometry of iron (III) salicylate?
IAChemistryHL6
How does the temperature of high-calcium milk affect its calcium concentration (mg/cm3) as measured through a complexometric titration utilising Eriochrome Black T (EBT) indicator?
IAChemistryHL7
Determining the optimal temperature for the fishes in my aquarium based on their oxygen need by using the Winkler’s method.
IAChemistryHL7
How does the temperature of a 1.5M copper sulfate solution electrolyte (40oC, 50oC, 60oC, 70oC, 80oC) impact the mass of copper deposited after a set timeframe of 30 minutes of electrolysis with zinc electrodes, with reference to the theoretical values given by Faraday’s laws of electrolysis?
IAChemistryHL6
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