3. Discussion: Refer to the reaction, explain what a precipitate is and how it i

Question

3. Discussion: Refer to the reaction, explain what a precipitate is and how it is formed based on solubility principle and how can be se [15] r test Experimental Data & Observation table: Solubility inMelting point Conductivity Type of bond lonic or covalent water (from S Table (ms) chloride Dissalv 714c 2.S Ionic Potassi sodium sulfate 10%Solvi | gguc o. Po lar Sucrose O covalent Benzoic acid Uknown 055 O Covolen (ID Known -each 5 marks) soluble …, slightly soluble +, Insoluble- Unknown-15 marks)

Explanation / Answer

water can form hydrogen bonds with the carboxylate functional group, the bulk of the benzoic acid is still the large benzene ring, which can only form Van der Waals forces of attraction with water

benzoic acid is soluble in water due to hydrogen bonding,conductivity is 0.003cm

KI is ionic compound is soluble in water due do like dissolve in like polar substance dissolve in polar solvent conductivity is high 33800cm

polar sucrose molecules which makes sucrose dissolve in water.conductivity is zero because sucrose molecule is neutral in nature

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