Fundamentals of analytical chemistry Douglas A

Table II contains the results obtained by applying the precipitation method of Willard and Chan (9) in which the strongly acid solution o f calcium containing an

Let V = original volume of solution in cell v = volume of standard nickel solution added Ci = original m olar concentration of nickel Caul.. — molar concentration

phere of carbon dioxide.. When this was accomplished valve D was opened and valve C adjusted to allow the oil to flow through the Monel tube a t constant

tion, more chloroplatinic acid must be added. For this purpose the alcohol is first evaporated, the reagent is added, and the treatment with alcohol is repeated

The small volume of sirupy liquid obtained on evaporation of the combined solutions is cooled slightly (not enough to solidify) and diluted with hot water. After boiling

T a b l e I. None of the common reversible oxidation indicators have been found useful under th e conditions employed. In general, calcium hypochlorite solutions

Iron-free concentrated sulfuric acid, GO or 70 per cent perchloric acid, 10 per cent aqueous hydroxylam ine hydrochloride solution, 1.5 per cent solution

ous times, centrifuged, and analyzed. of reducing sugar per m illiliter. A num ber of techniques are available for th e determ ination of alcohol in dilute solutions. T he