Table of Contents
What is the molecular weight of Na2S2O3?
158.11 g/mol
Sodium thiosulfate/Molar mass
What is equivalent mass of sodium?
Instead, these chemists had settled on a list of what were universally called “equivalents” (H = 1, O = 8, C = 6, S = 16, Cl = 35.5, Na = 23, Ca = 20, and so on).
Is Na2S2O3 a primary standard?
So sodium thiosulfate is not a primary standard because it is hygroscopic.
How do you make Na2S2O3?
Sodium Thiosulphate Solution Preparation
- Take about 100 ml of water in a cleaned and dried 1000 ml volumetric flask.
- Add about 25 gm of Sodium Thiosulphate with continues stirring.
- Add about 0.2 gm of Sodium Carbonate with continues stirring.
- Add more about 700 ml of water, mix.
- Make up the volume 1000 ml with water.
What is the chemical formula for thiosulfate?
Sodium thiosulfate ( sodium thiosulphate) is a chemical and medication. As a medication it is used to treat cyanide poisoning and pityriasis versicolor . It is an inorganic compound with the formula Na2S2O3. H 2 O. Typically it is available as the white or colorless pentahydrate, Na 2 S 2 O 3 ·5 H2O.
What is the common name for sodium thiosulfate?
Sodium thiosulfate, commonly called hypo (from “hyposulfite”), was widely used in photography to fix black and white negatives and prints after the developing stage; modern ‘rapid’ fixers use ammonium thiosulfate as a fixing salt because it acts three to four times faster. Some bacteria can metabolise thiosulfates.
What is the molar mass of sodium thiosulfate?
Sodium thiosulfate is an important inorganic salt with several medical uses. It is also called sodium hyposulfite or ‘hypo’. Formula and structure: The chemical formula of sodium thiosulfate is Na2S2O3 and its molar mass is 158.11 g/mol. It is also available as its pentahydrate salt (Na2S2O3.5H2O), with a molar mass of 248.18 g/mol.