If sulfurous acid is present, it will be oxidized to sulfuric acid and precipitated as barium sulfate by the barium chlorid.
Will she be able to illuminate a screen treated with platino-cyanide of barium?
Sulphuric acid or sulphates is indicated by a soluble salt of barium throwing down a white precipitate insoluble in nitric acid.
What weight of barium sulphate will be formed at the same time?
barium sulphate occurs in nature in the form of heavy white crystals.
Sulphates, estimated as barium sulphate, and calculated to K2SO4.
Usually a small amount of potassium is present replacing part of the barium.
barium carbonate also gives a precipitate, and is useful in separations.
An improvement consists in adding one ounce of carbonate of barium to the fluid while warm.
The mass is then taken up with water, and chloride of barium added to the solution.
1808, coined in Modern Latin by its discoverer, English chemist Sir Humphrey Davy (1778-1829), because it was present in the mineral barytes "heavy spar" (barium sulphate), so named by Lavoisier from Greek barys "heavy" (see grave (adj.)). The metal is actually relatively light.
barium bar·i·um (bâr'ē-əm, bār'-)
A soft alkaline-earth metal used to deoxidize copper. Atomic number 56; atomic weight 137.33; melting point 727°C; boiling point 1,897°C; specific gravity 3.50; valence 2.
A soft, silvery-white metallic element of the alkaline-earth group. It occurs only in combination with other elements, especially in barite. Barium compounds are used in x-raying the digestive system and in making fireworks and white pigments. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See Periodic Table.