Quantitative Analysis of Metal Ion Concentrations by Ion Exchange Chromatography Ideally the effluent is solution of...

Quantitative Analysis of Metal Ion Concentrations by Ion Exchange Chromatography

Ideally the effluent is solution of nitric acid and a metal cation.

True or false?

Expert Solution

Ion-exchange chromatography

anions or cations are covalently attached to solid stationary phase mobile: liquid

Ion-exchange chromatography a separation process where ions bound to a resin is brought to contact with a solution with an unknown cation concentration.This process can be used to eliminate interfering ions during chemical analysis.An example of which are Iron (III) and Aluminum (III) which can interfere in the determination of the Ksp of insoluble sulfates. It can also be used to soften hard water with the aid of home watersofteners.This experiment aims to determine theconcentration of ions through the use of ion exchange chromatography. This type of chromatography is driven by the exchange of ions between the mobile phase and the stationary phase. The stationary phase used in the experiment is a resin. An unknown solution is passed through the resin, where hydrogen ionsexchange with other cations.Measurement is done by titrating thesolution (or eluate) that is collected in a beaker at the base of the set-up.The exchange process in the experiment isdescribed by the following reaction.

2RSO₃ + H⁺ + Cu²⁺ <-> (RSO₃)₂Cu + 2H⁺

Once all the cations in the solution havereacted, the resin will expel H⁺ from theresin, and these H⁺ will then be titratedwith standardized NaOH to determine thenumber of cations that bonded to the resin.

TRUE the effluent is solution of nitric acid and a metal cation.

Heavy metal removal from inorganic effluent can be achieved by conventional treatment processes such as chemical precipitation, ion exchange, and nitric acid.

queen_honey_blossom answered 2 years ago

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