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As determined by the reaction rate constant, which catalyst from baker’s yeast, baking powder, and manganese (IV) oxide is the most effective at catalyzing the decomposition of 3% hydrogen peroxide? - Chemistry IA exemplar scored 7

As determined by the reaction rate constant, which catalyst from baker’s yeast, baking powder, and manganese (IV) oxide is the most effective at catalyzing the decomposition of 3% hydrogen peroxide?

How does varying the concentration of Iron(III) chloride affect the rate of hydrogen peroxide decomposition? - Chemistry IA exemplar scored 4

How does varying the concentration of Iron(III) chloride affect the rate of hydrogen peroxide decomposition?

How does temperature (ranging from 10℃ to 50℃) affect the rate of the iodine clock reaction, and what is the relationship between temperature and reaction rate? Specifically, how can the reaction rate be determined from the time taken to reach the blue-black endpoint, and how can this data be analysed using the Arrhenius equation to estimate the activation energy of the reaction? - Chemistry IA exemplar scored 5

How does temperature (ranging from 10℃ to 50℃) affect the rate of the iodine clock reaction, and what is the relationship between temperature and reaction rate? Specifically, how can the reaction rate be determined from the time taken to reach the blue-black endpoint, and how can this data be analysed using the Arrhenius equation to estimate the activation energy of the reaction?

Examining the effect of temperature on the rate of reaction and determining activation energy using the Arrhenius Plot. - Chemistry IA exemplar scored 4

Examining the effect of temperature on the rate of reaction and determining activation energy using the Arrhenius Plot.

How does temperature (5.0ºC, 10.0ºC, 15.0ºC, 20.0ºC, 25.0ºC, 30.0ºC, 35.0ºC, 40.0ºC) affect the concentration of dissolved oxygen (mg/dm3) in 20.00cm3 of deionised water, measured using Winkler's titration method? - Chemistry IA exemplar scored 7

How does temperature (5.0ºC, 10.0ºC, 15.0ºC, 20.0ºC, 25.0ºC, 30.0ºC, 35.0ºC, 40.0ºC) affect the concentration of dissolved oxygen (mg/dm3) in 20.00cm3 of deionised water, measured using Winkler's titration method?

"How does the temperature change (20°C, 40°C, 60°C, 80°C and 100°C) affect calcium concentration (mg) in soya milk, measured by using Ethylenediaminetetraacetic acid (EDTA) Complexometric titration?” - Chemistry IA exemplar scored 6

"How does the temperature change (20°C, 40°C, 60°C, 80°C and 100°C) affect calcium concentration (mg) in soya milk, measured by using Ethylenediaminetetraacetic acid (EDTA) Complexometric titration?”

How will heating lemon juice to different temperatures (60, 70, 80, 90, 100 degrees celsius) affect its concentration of ascorbic acid (vitamin C)? - Chemistry IA exemplar scored 4

How will heating lemon juice to different temperatures (60, 70, 80, 90, 100 degrees celsius) affect its concentration of ascorbic acid (vitamin C)?

Investigating the Effect of Ionic Charge of Cation towards the Enthalpy of Solution of Salts - Chemistry IA exemplar scored 5

Investigating the Effect of Ionic Charge of Cation towards the Enthalpy of Solution of Salts

How does the temperature (50.0,60.0,70.0,80.0,90.0 °C) of Acetylsalicylic acid synthesis
from Salicylic Acid and Acetic anhydride affect its % yield and purity (determined by the Iron
(III) Chloride test and the melting-point of the Acetylsalicylic acid crystals)? - Chemistry IA exemplar scored 5

How does the temperature (50.0,60.0,70.0,80.0,90.0 °C) of Acetylsalicylic acid synthesis from Salicylic Acid and Acetic anhydride affect its % yield and purity (determined by the Iron (III) Chloride test and the melting-point of the Acetylsalicylic acid crystals)?

Investigation into how varied temperature (20℃, 30℃, 40℃, 50℃, 60℃, 70℃) affect the bleaching capacity of
sodium hypochlorite in removing protein-based stains (egg-yolk) from 100% cotton fabric, measured by the ΔE value
obtained using the Color Identifier Colorimeter app? - Chemistry IA exemplar scored 6

Investigation into how varied temperature (20℃, 30℃, 40℃, 50℃, 60℃, 70℃) affect the bleaching capacity of sodium hypochlorite in removing protein-based stains (egg-yolk) from 100% cotton fabric, measured by the ΔE value obtained using the Color Identifier Colorimeter app?