The direct conversion of solid into vapour without passing through liquid state by heating is called sublimation. Explanation: Sublimation is used to purify solid substances. – Iodine, ammonium chloride, naphthalene, anthracene, and benzoic acid can sublime. A substance to be sublimed is taken in a watch glass covered with an inverted funnel. The funnel is…
The obtaining of crystals by cooling the hot saturated solution leaving behind mother-liquor is called Crystallization. Basic Principal: The preparation of a chemical compound usually affords a crude product and there is an need to purify it by crystallization from a suitable solvent. The basic principle of crystallization is the fact that the solute should…
The process of separating solids or suspended particles from liquids by passing through a filter medium is called filtration. Filtrate: The liquid obtained after filtration is called filtrate. Residue: The substance which is left on the filter paper after filtration is called residue. Types of Filtration: Many of filter mediums can be used for filtration….
A type of analysis in which constituents of substances are detected or identified is called qualitative analysis. A type of analysis in which constituents of substances are detected or identified is called qualitative analysis. Following steps involve in the quantitative analysis: (i) Obtaining of a pure sample (ii) Separation of desired constituents (iii) Measurement…
The amount of product is termed as yield. Theoretical Yield: The amount of the product that is expected to be formed according to the calculations based on balanced chemical equation is called theoretical yield. It is the stoichiometric amount of the product. It does not require any experimental work. It is always greater than actual…
A reactant that controls the amount of the product formed in a chemical reaction due to its smaller amount is called limiting reactant. Excess reactant: A reactant which is present in large amount in a chemical reaction & some of its amount left after the completion of chemical reaction is called excess reactant. Explanation:…