Chemical lecture experiments . Fig. 153 end. On heating the barium oxide oxygen will be absorbedand the rate of bubbling in the second bottle will be muchless than that in the first. The barium oxide should not be heated too much, as other-wise the oxygen will again be expelled. 2 BaO + 02 = 2 Ba02. Two gas washing-bottles ; 20 cm. length combustion-tubing; 4-tubeburner; O supply ; BaO. 4. Decomposition of barium peroxide by heat. — A por-tion of the barium peroxide from the preceding experimentmay be heated in a test-tube and the liberated oxygen testedwith a glowing splinter. Hydrated barium
Chemical lecture experiments . Fig. 153 end. On heating the barium oxide oxygen will be absorbedand the rate of bubbling in the second bottle will be muchless than that in the first. The barium oxide should not be heated too much, as other-wise the oxygen will again be expelled. 2 BaO + 02 = 2 Ba02. Two gas washing-bottles ; 20 cm. length combustion-tubing; 4-tubeburner; O supply ; BaO. 4. Decomposition of barium peroxide by heat. — A por-tion of the barium peroxide from the preceding experimentmay be heated in a test-tube and the liberated oxygen testedwith a glowing splinter. Hydrated barium peroxide on heating yields large quanti-ties of water, which are likely to condense and break thetube. If, however, it is carefully heated until no moresteam escapes, the temperature may be raised and theoxygen liberated. The residue on treatment with wateryields an alkaline solution of barium hydroxide. 5. Action of hydrogen on barium peroxide. —When bariumperoxide is heated in an atmosphere of hydrogen, the reac- STRONT
Size: 2714px × 921px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectchemist, bookyear1901
