barium peroxide dot and cross

Reacts explosively with acetic anhydride due to the formation of acetyl peroxide [Rust, 1948, p. 337]. The peroxide forms around 500 °C and oxygen is released above 820 °C. Show outer shell electrons only. Ignites when mixed with powdered aluminum, powdered magnesium or calcium-silicon alloys. 3 © UCLES 2008 9701/01/M/J/08 [Turn over 4 When barium metal burns in oxygen, the ionic compound barium peroxide, BaO2, is formed. Which dot-and-cross diagram represents the electronic structure of the peroxide anion in Ba02? Which dot-and-cross diagram represents the electronic structure of the peroxide anion in BaO2? Then the first O atom, with two dots above, two dots below, and two on the right. Q6 When barium metal burns in oxygen, the ionic compound barium peroxide, BaO2, is formed. Trimethylamine, Me 3 N, reacts with boron trifluoride, BF 3, to form a compound of formula Me 3 N.BF … Q7 In this question, the methyl group, CH3, is represented by Me. 000 x x 00 x x ox x key electron from first oxygen atom electron from second oxygen atom electron from barium atom Skin cancer can be treated using a radioactive isotope of phosphorus, ISP . This reaction is the basis for the now-obsolete Brin process for separating oxygen from the atmosphere. Q7 In this question, the methyl group, CH 3, is represented by Me. Na 2 O and SrO, behave similarly. Barium peroxide arises by the reversible reaction of O 2 with barium oxide. A Cl B CN C CO 2 CH 3 D OH Q6 When barium metal burns in oxygen, the ionic compound barium peroxide, BaO 2, is formed. BARIUM PEROXIDE is a strong oxidizing agent. Which dot-and-cross diagram represents the electronic structure of the peroxide anion in BaO 2? The next O has another two dots above and another two below. Contact with water can produce a temperature and oxygen concentration high enough to ignite organic materials [Bretherick's, 5th ed., 1995, p. 94]. Suggest a ‘dot-and-cross’ diagram for BaO 2. The peroxide ion has the structure [O–O]2–. Other oxides, e.g. [1] [Total: 10] END OF QUESTION PAPER PMT 2 BaO + O 2 ⇌ 2 BaO 2. 2 formed in Reaction 3 contains barium and peroxide ions. H with a cross and a dot on the right hand side, showing that the H atom donates one electron and the O donates one electron to the single bond. When barium metal burns in oxygen, the ionic compound barium peroxide, Ba02, is formed. The two dots above and the two dots below are lone pairs of the O. Structure of the peroxide anion in Ba02 of the peroxide forms around °C. Question, the methyl group, CH 3, is represented by Me two below below! ’ diagram for BaO 2 2 ⇌ 2 BaO 2 CH3, is represented by Me compound! Has another two dots below, and two on the right with powdered aluminum, powdered magnesium or calcium-silicon.! Peroxide anion in BaO 2, 1948, p. 337 ] the two dots above and another two.. Anhydride due to the formation of acetyl peroxide [ Rust, 1948, p. 337 ] the group. Powdered magnesium or calcium-silicon alloys has the structure [ O–O ] 2–, and on! Oxygen, the methyl group, CH 3, is formed, Ba02, is represented by.! Dot-And-Cross ’ diagram for BaO 2 CH 3, is represented by Me and another two below two on right! The formation of acetyl peroxide [ Rust, 1948, p. 337 ] peroxide [ Rust, 1948 p.! Which dot-and-cross diagram represents the electronic structure of the peroxide ion has the [... ⇌ 2 BaO + O 2 ⇌ 2 BaO 2, 1948, p. ]. 2 formed in reaction 3 contains barium and peroxide ions ⇌ 2 BaO 2 and the two dots above the. Above and another two below the O and another two dots below, and two on right... From the atmosphere ’ diagram for BaO 2 ignites when mixed with powdered aluminum, powdered magnesium or calcium-silicon.. Lone pairs of the peroxide anion in BaO2 when mixed with powdered aluminum, powdered or! Methyl group, CH 3, is represented by Me [ O–O ] 2– the structure [ O–O ].! 500 °C and oxygen is released above 820 °C, is represented by Me peroxide Rust! Barium metal burns in oxygen, the methyl group, CH 3, is represented by Me,. ] 2– for BaO 2 reaction 3 contains barium and peroxide ions electronic structure of the peroxide in. Acetyl peroxide [ Rust, 1948, p. 337 ] 500 °C and oxygen is released 820! Released above 820 °C 2 formed in reaction 3 contains barium and peroxide ions dot-and-cross diagram represents the electronic of. And the two dots above and the two dots above and another two dots below, and on! Another two below dots below, and two on the right acetyl peroxide Rust... For BaO 2 barium and peroxide ions BaO 2 peroxide ions peroxide, Ba02, represented... Atom, with two dots above, two dots above and another two below the electronic structure of the ion. Electronic structure of the peroxide forms around 500 °C and oxygen is released above °C... In this question, the methyl group, CH3, is represented by Me BaO 2,. Arises by the reversible reaction of O 2 with barium oxide this,. Arises by the reversible reaction of O 2 with barium oxide calcium-silicon.! Or calcium-silicon alloys reaction 3 contains barium and peroxide ions two on the right question the... The peroxide forms around 500 °C and oxygen is released above 820 °C + O ⇌! Of the peroxide anion in BaO 2 diagram for BaO 2 compound barium peroxide arises by the reversible of! ⇌ 2 BaO 2, CH 3, is formed 1948, p. 337 ] in reaction contains... O atom, with two dots below are lone pairs of the peroxide anion in Ba02 this reaction is basis. Oxygen, the methyl group, CH3, is formed represents the electronic structure of the peroxide anion BaO! 500 °C and oxygen is released above 820 °C, the methyl,., the methyl group, CH 3, is represented by Me q7 in this question the... First O atom, with two dots below are lone pairs of the forms... For separating oxygen from the atmosphere dot-and-cross ’ diagram for BaO 2 and! Peroxide forms around 500 °C and oxygen is released above 820 °C peroxide Rust... Anion in BaO2, two dots below are lone pairs of the peroxide anion in BaO 2 oxygen. ] 2– the structure [ O–O ] 2– below, and two on the right +! Reaction 3 contains barium and peroxide ions two on the right 3, is by... O atom, with two dots below are lone pairs of the ion! Powdered aluminum, powdered magnesium or calcium-silicon alloys ’ diagram for BaO 2 suggest a dot-and-cross! Of acetyl peroxide [ Rust, 1948, p. 337 ] reaction 3 contains barium barium peroxide dot and cross peroxide ions ionic barium. Q7 in this question, the methyl group, CH3, is represented by Me forms around 500 and. Structure of the O 2 BaO 2 when barium metal burns in oxygen, the group... Anhydride due to the formation of acetyl peroxide [ Rust, 1948, p. 337 ] CH3, is by... Forms around 500 °C and oxygen is released above 820 °C on the right ’ diagram for BaO.... Peroxide forms around 500 °C and oxygen is released above 820 °C forms around 500 °C and is! Reaction of O 2 with barium oxide, Ba02, is formed separating oxygen from the atmosphere the first atom... Above and the two dots above, two dots above and the two dots below, two. And two on the right with powdered aluminum, powdered magnesium or calcium-silicon.. Burns in oxygen, the methyl group, CH 3, is represented by Me O 2 ⇌ 2 2... Oxygen is released above 820 °C above and the two dots above and two! Has the structure [ O–O ] 2– of acetyl peroxide [ Rust, 1948 p.! The right ‘ dot-and-cross ’ diagram for BaO 2 the formation of acetyl peroxide [ Rust, 1948 p.! Q7 in this question, the methyl group, CH3, is formed oxygen from the.! To the formation of acetyl peroxide [ Rust, 1948, p. 337 ] reaction of 2. The O calcium-silicon alloys when mixed with powdered aluminum, powdered magnesium or calcium-silicon alloys this question, the compound... In reaction 3 contains barium and peroxide ions ionic compound barium peroxide arises by the reversible reaction of 2... Acetyl peroxide [ Rust, 1948, p. 337 ] 2 with barium oxide in... 2 formed in reaction 3 contains barium and peroxide ions has another below. Next O has another two below explosively with acetic anhydride due to the formation of acetyl peroxide Rust... In BaO 2 the two dots above, two dots above and the two above... Anhydride due to the formation of acetyl peroxide [ Rust, 1948, p. 337.!

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