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Every precipitate will be collected using a Hirsch funnel. Make definite that the plastic frit disc is firmly snapped in place in your focus. Replacement frit discs are available in case it become clogged or otherwise broken. Attach the funnel to a filter flask, using the neoprene adapter to ensure a good seal among the funnel and the flask. Attach the filter flask to your vacuum line and turn the vacuum on. Swirl the precipitate in solution and quickly pour the mixture onto the filter (while the solids are still suspended). Rinse the precipitate with a minimal amount of ice-cold water. Leave the space on until the precipitate is dry (~5 min.), and take note of the mass.
A student attempting to sulfonate styrene (vinyl benzene) obtains a by product that contains neither sulfur nor oxygen atoms. Efforts to nitrate styrene yield identical results. Of
Criteria for determining the purity of organic compounds
Q. Show the Factors Affecting Equilibrium Position? Ans. The term equilibrium position refers to the relative proportions of reactants and products in the equilibrium mixt
Number of unpaired electrons in 1s 2 2s 2 2p 3 is: (1) 2 (2) 0 (3) 3 (4) 1 Ans: 3
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
A table of how compounds are classified
how is back titration graphs drawn
Preservatives: The preservatives avoid spoilage of food because of microbial expansion. The most common preservative employed is sodium benzoate; C 6 H 5 COON a It is metabol
Q. Illustrate the physical property of matter? A physical property of a substance is a quality that can be observed and measured without changing the composition of the subst
#question:- What are the theories of catalysis?
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