Fehling's Test

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Uploaded by on Sep 13, 2008

Fehling I consists of 7 g of hydrated copper(II) sulfate dissolved in 100 mL of dist. water.
http://weblaboratorium.hu

Fehling II is made by dissolving 35 g of potassium sodium tartrate and 10 g of sodium hydroxide in 100 mL of dist. water.

Fehling's reagent: Equal volumes of Fehling I and Fehling II are mixed to form a deep blue solution.

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Science & Technology

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  • i wish they would explain shit in these videos

  • nice... 'bunsen burner'

    and i heard it takes about 3 minutes or less for the Cu2O to ppt.

  • it takes w many seconds to produce the brick-red precipitate?

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