Q1ChemistryUnit 20: Principles Related to Practical Chemistry
In the titration of ferrous ammonium
sulphate and potassium dichromate, the external indicator used is:
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Important Questions: The chemistry involved in the titrimetric exercises: acids, bases and the use of indicators, oxalic-acid vs KMnO4, Mohr's salt vs KMnO4 for JEE
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Notes & Formulas
Detection of extra elements (Nitrogen, sulphur, halogens) in organic compounds
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Detection of functional groups: hydroxyl (alcoholic and phenolic), carbonyl (aldehyde and ketones), carboxyl and amino groups in organic compounds
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The chemistry involved in the preparation of Inorganic compounds: Mohr's salt, potash alum
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The chemistry involved in the preparation of Organic compounds: Acetanilide, p-nitro acetanilide, aniline yellow, iodoform
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Chemical principles involved in the qualitative salt analysis Cations: Pb2+, Cu2+, Al3+, Fe3+, Zn2+, Ni2+, Ca2+, Ba2+, Mg2+, NH4+
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Chemical principles involved in the qualitative salt analysis Anions: CO3(2-), S2-, SO4(2-), NO3-, NO2-, Cl-, Br-, I- (Insoluble salts excluded)
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Chemical principles involved in experiments: Enthalpy of solution of CuSO4, Enthalpy of neutralization of strong acid and strong base, Preparation of lyophilic and lyophobic sols, Kinetic study of the reaction of iodide ions with hydrogen peroxide at room temperature
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