H2SO4 is an oxidizing agent, Ba is a reducing agent.
Names: Barium, Ba, Element 56
Appearance: Yellowish-to-white lustrous solid in various forms
H2SO4 – Sulfuric acid
Other names: Oil of vitriol, Sulfuric acid, concentrated (> 51% and , H2SO4
Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]
Names: Barium sulfate, Artificial barite, Barite
Appearance: White crystalline ; Odourless tasteless white or yellowish crystals or powder ; White or yellowish, odorless powder.