How do you distinguish solid barium sulfate from solid barium chloride?
Barium Chloride is soluble in water and Barium Sulfate is insoluble in water.
This is a double-replacement precipitation reaction. (I'm assuming that all reactants are at first in aqueous solution- the precipate(insoluble solid formed) is in bold is Barium Sulfate). 3BaCl2(aq) + Al2(SO4)3(aq) ---> 3BaSO4(s)+ 2AlCl3(aq) OR if you prefer, the net ionic equation: Ba2+(aq) + SO42-(aq) ---> BaSO4(s)
Barium is a solid at room temperature, and has a melting point of 727°C. Barium at room temperature is explosively combustible, especially as powder, due to its extreme reactivity with oxygen in the air. Barium sulfate is used in medical radiology, and barium is used with yttrium in YBCO high-temperature superconducting compounds (yttrium barium copper oxide).