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What is the impact of cooking temperatures (70C, 80C, 90C and 100C) on the vitamin C content of white cabbage when exposed to a short cooking duration of 10 minutes?
Chemistry
IA
3
HL
Pro
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
7
HL
Pro
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
4
SL
Pro
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
5
SL
Investigating the Effect of Ionic Charge of Cation towards the Enthalpy of Solution of Salts
Chemistry
IA
5
SL
Pro
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
7
HL
Pro
How does varying the concentration of Iron(III) chloride affect the rate of hydrogen peroxide decomposition?
Chemistry
IA
4
SL
Pro
Measuring water hardness from different sources of water using EDTA complexation titration
Chemistry
IA
4
SL
Pro
Investigating how increasing temperatures of water (40°C, 50°C, 60°C, 70°C, 80°C, 90°C, 100°C) in which cloves are steeped affect the concentration of quercetin, measured by a spectrophotometer
Chemistry
IA
5
HL
Pro
How do the steeping times (30, 60, 90, 120 and 150 seconds) of tea affect its caffeine content using dichloromethane in a separating funnel?
Chemistry
IA
7
SL
Pro