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Barium carbonate is the inorganic compound with the formula BaCO 3. Like most alkaline earth metal carbonates , it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite .
BaCl 2 + 2 NaOH → 2 NaCl + Ba(OH) 2. BaCl 2 ·2H 2 O is stable in the air at room temperature, but loses one water of crystallization above 55 °C (131 °F), becoming BaCl 2 ·H 2 O, and becomes anhydrous above 121 °C (250 °F). [2] BaCl 2 ·H 2 O may be formed by shaking the dihydrate with methanol. [3] BaCl 2 readily forms eutectics with ...
A 0.5 McFarland standard is prepared by mixing 0.05 mL of 1.175% barium chloride dihydrate (BaCl 2 •2H 2 O), with 9.95 mL of 1% sulfuric acid (H 2 SO 4). [ 1 ] Now there are McFarland standards prepared from suspensions of latex particles, which lengthens the shelf life and stability of the suspensions.
2 nh 4 clo 3 + baco 3 → ba(clo 3) 2 + 2 nh 3 + h 2 o + co 2 The reaction initially produces barium chlorate and ammonium carbonate ; boiling the solution decomposes the ammonium carbonate and drives off the resulting ammonia and carbon dioxide, leaving only barium chlorate in solution.
The intermetallic compound BaAl 4 is produced first: [9]: 3 3 BaO + 14 Al → 3 BaAl 4 + Al 2 O 3. BaAl 4 is an intermediate reacted with barium oxide to produce the metal. Note that not all barium is reduced. [9]: 3 8 BaO + BaAl 4 → Ba↓ + 7 BaAl 2 O 4. The remaining barium oxide reacts with the formed aluminium oxide: [9]: 3 BaO + Al 2 O 3 ...
Yttrium barium copper oxide (YBCO) is a family of crystalline chemical compounds that display high-temperature superconductivity; it includes the first material ever discovered to become superconducting above the boiling point of liquid nitrogen [77 K (−196.2 °C; −321.1 °F)] at about 93 K (−180.2 °C; −292.3 °F).
Barium acetate is generally produced by the reaction of acetic acid with barium carbonate: [2] BaCO 3 + 2 CH 3 COOH → (CH 3 COO) 2 Ba + CO 2 + H 2 O. The reaction is performed in solution and the barium acetate crystalizes out at temperatures above 41 °C. Between 25 and 40 °C, the monohydrate version crystalizes. Alternatively, barium ...
½ O 2 (g) + O 2– O ⇌ [O 2] 2– O. where J O is the species J in the oxygen position within the rock-salt lattice. The complete peroxidation of BaO to BaO 2 occurs at moderate temperatures by oxygen uptake within the BaO rock-salt lattice: Barium oxide peroxidation from oxygen uptake, adapted from Middleburgh et al, 2012. [4]