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Variation of Specific, Equivalent and Molar Conductivities with Concentration

The reagent u...

Question

The reagent used in the gravimetric analysis of $C o^{2 +}$ ion is:

A

DMG

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B

α -

nitro

- β -

nephthol

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C

β -

nitro

- α -

nephthol

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D

K_{4} [F e (C N)_{6}]

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Solution

The correct option is B $α -$ nitro $- β -$ nephthol
The reagent used in the gravimetric analysis of $C o^{2 +}$ is $α -$ nitro $- β -$ nephtholGravimetric analysis is a method of quantitative chemical analysis in which the constituent sought is converted into a substance (of known composition) that can be separated from the sample and weighed. The steps commonly followed in gravimetric analysis are (1) preparation of a solution containing a known weight of the sample (2) separation of the desired constituent (3) weighing the isolated constituent and (4) computation of the amount of the particular constituent in the sample from the observed weight of the isolated substance.

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