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Adams' catalyst is prepared from chloroplatinic acid H 2 PtCl 6 or ammonium chloroplatinate, (NH 4) 2 PtCl 6, by fusion with sodium nitrate. The first published preparation was reported by V. Voorhees and Roger Adams. [2] The procedure involves first preparing a platinum nitrate which is then heated to expel nitrogen oxides. [3]
Ammonium hexachloroplatinate is used in platinum plating. Heating (NH 4) 2 [PtCl 6] under a stream of hydrogen at 200 °C produces platinum sponge. Treating this with chlorine gives H 2 [PtCl 6]. [2] Ammonium hexachloroplatinate decomposes to yield platinum sponge when heated to high temperatures: [2] [5] 3(NH 4) 2 PtCl 6 → 3Pt(s) + 2NH 4 Cl ...
Cerium(III) nitrate – Ce(NO 3) 3; Cerium(III) oxide – Ce 2 O 3; Cerium(III) sulfate – Ce 2 (SO 4) 3; Cerium(III) sulfide – Ce 2 S 3; Cerium(IV) hydroxide – Ce(OH) 4; Cerium(IV) nitrate – Ce(NO 3) 4; Cerium(IV) oxide – CeO 2; Cerium(IV) sulfate – Ce(SO 4) 2; Cerium(III,IV) oxide – Ce 3 O 4; Ceric ammonium nitrate – (NH 4) 2 ...
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This is the minimum subscriber count required for the YouTube Partner Program, which also requires a minimum of 4,000 total viewer watch hours in the past 12 months, plus a manual review of the channel's content to determine compliance with the program guidelines. [11] Bronze was for channels with 10,000 to 99,999 subscribers. [12]
They live incredibly long lives. On average, the tuatara lives for 60 years, but it can live to be older than 100. The oldest known living tuatara is Henry, a 130-year-old member of his species ...
Chloroplatinic acid (also known as hexachloroplatinic acid) is an inorganic compound with the formula [H 3 O] 2 [PtCl 6](H 2 O) x (0 ≤ x ≤ 6). A red solid, it is an important commercial source of platinum, usually as an aqueous solution.
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