This is done by immersing the plate in a solution of sodium thiosulphate (hypo).
A 2 per cent bleach solution, containing very little excess base, was diluted with distilled water and the various dilutions titrated with thiosulphate after the addition of potassium iodide.
Again, solutions of chlorine gas and hypochlorites having the same oxidising activity, as determined by titration with thiosulphate after the addition of potassium iodide and acid, i.
Nitrites are oxidised by free chlorine and consequently do not interfere with the estimation of it by the thiosulphate method; the influence of ferric salts can be overcome by substituting 3 c.
The relation of the sodium hypochlorite solution to the sodium thiosulphate being known, the percentage of acetone can be readily calculated.
The mixture is then acidified with the hydrochloric acid solution, and while agitated, an excess of sodium thiosulphate solution is added, the mixture being afterwards allowed to stand a few minutes.
The starch indicator is then added, and the excess of thiosulphate re-titrated.
Two methods for the direct standardization of the sodium thiosulphate solution are here described, and one for the direct standardization of the iodine solution.
By a similar course of reasoning the conclusion is reached that the normal solution of sodium thiosulphate should contain, per liter, its molecular weight in grams.
It is necessary to determine the amount of thiosulphate which reacts with the iodine thus liberated by making a "blank test" with the iodide and acid alone.
Note 3) containing about 3 grams of the salt, and titrate with thiosulphate solution until the color of the liberated iodine is nearly destroyed.
Make a blank test for the amount of thiosulphate solution required to react with the iodine liberated by the iodate which is generally present in the potassium iodide solution, and deduct this from the total volume used in the titration.
Add a solution containing about 3 grams of potassium iodide, as in the standardization, and titrate with thiosulphate solution until the yellow of the liberated iodine is nearly discharged.
From the ratio between the solutions, calculate the similar value for the thiosulphate solution.
The second bath of the two-bath chrome tannage consists of a solution of sodium thiosulphate acidified with hydrochloric acid.
A suitable volume of liquor is titrated with N/10 thiosulphate after acidifying with hydrochloric acid and adding potassium iodide.
The oxidized residue is dissolved in hydrochloric acid and titrated with thiosulphate as described for the two-bath process.
In practice the most favourable conditions are usually discovered empirically, but, broadly speaking, the goods are usually added soon after the thiosulphate and acid are well mixed.
A solution of calcium polysulphides and calcium thiosulphate produced by boiling together lime, sulphur and water.
A solution of sodium iodide and ammonium iodide obtained by mixing iodine and sodium thiosulphate (each 8.
Nearly insoluble in water and slightly soluble in alcohol (1:115); soluble in solutions of soluble iodides, sodium thiosulphate and hot solutions of alkali chlorides.
Coniine forms with carbon disulphide a thiosulphateand a sulphite.
Nicotine does not react with CS{2} to form thiosulphate (see p.
The blank experiment is titrated in the same manner, and from the amount of thiosulphate required in the blank experiment is deducted the number of c.
N/10 sodiumthiosulphate solution, the whole being well agitated during the titration, which is finished with starch paste as indicator.
H2O, forms colourless needles; it is obtained in the direct action of sodium thiosulphate on gold in the presence of an oxidizing agent, or by the addition of a dilute solution of auric chloride to a sodium thiosulphate solution.
Oxy-salts of gold are almost unknown, but the sulphite and thiosulphateform double salts.
The amount of iodine liberated is therefore a measure of the copper in the solution, and when the sodium thiosulphate has been carefully standardized the method is extremely accurate.
The thiosulphate solution is standardized by dissolving 0.
A solution of potassium iodid was added and the iodin titrated with a tenth-normal sodium thiosulphate solution.
Tenth-normal sodiumthiosulphate was slowly added with agitation until the pink color of the chloroform layer had nearly disappeared.
Direct titration with sodium thiosulphate solution indicated the presence of 1.
The mixture was then titrated with tenth-normal sodium thiosulphate until on thorough shaking no iodin passed into the aqueous layer.
Some of the material was examined as follows: A portion of the ointment which had been made for nearly three months was shaken in a separator with chloroform and a dilute mixture of potassium iodide and sodium thiosulphate solutions.
A little sodium salicylate is added, the solution cooled, an excess of potassium iodid added, and the liberated iodine titrated with tenth-normal sodium thiosulphate in the usual way.
It is finally soaked in a solution of sodium thiosulphate (hyposulphite or hypo), Na2S208.
Try to dissolve the other half in Na2S2O3, sodium thiosulphate solution.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "thiosulphate" in a variety of sentences. We hope that you will now be able to make sentences using this word.
