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Answer 1

Acid oxide commodity: acidic oxide
Pinyin: suanxingyanghuawu
English name: acid (IC) oxide
Description: acid oxide is a kind of can with water transamination acid or alkali transamination with salt and water oxide. General is a non-metallic element of transition metal oxides and certain elements of high prices oxide. For example sulphur trioxide SO3, five oxidation 2 phosphorus P2O5 and seven oxidation 2 manganese Mn2O7, three chrome oxide CrO3 etc.
We know with acid, alkali salt and water and reacts with certain alkali nonmetallic oxide reaction, also generate salt and water. For example
2NaOH + H2SO4 = Na2SO4 + 2H2O
2NaOH + CO2 = Na2CO3 + H2O
Ca (OH) 2 + SO3 = CaSO4 + H2O
The above reaction showed that carbon dioxide, sulphur trioxide with acid properties similar. Therefore, people put carbon dioxide, sulphur trioxide such reacts with alkali salt and water oxide, called acid oxide.
Non-metal oxide most is acidic oxides, our familiar nonmetal oxide, carbon monoxide and nitric acid oxide, usually not be included under no acid oxide.
Properties and other:
1, acid oxide most can directly combined with water generated oxygen-bearing acid.
The CO2 + H2O = H2CO3
Low SO3 + H2O = H2SO4
SO2 + H2O = H2SO3 (sulfite)
2, oxygen acid can also thermal decomposition an acidic oxides. For example, will be available sulfuric acid heating three oxygen
Of sulfur and water:
H2SO4 = SO3 ↑ + H2O
Here sulphur trioxide is seen as the products of sulfuric acid after dehydration, so also the acid oxide called anhydride.
SiO2, N2O5, also be acid oxide, but silica insoluble in water, can't directly generate silicate combined with water
3, to judge the acid oxide is the most important basis for chemical reaction after the element combining remain unchanged.
Exception:
Silica is a more specific acid oxide.
Silica can and hydrofluoric acid reaction, but not with water reaction.
Note:
Acid oxide mostly nonmetal oxide
Most of the non-metallic oxide is acid oxide
Oxygen acid only acid oxide
译文：
酸性氧化物 品名:酸性氧化物
拼音:suanxingyanghuawu
英文名称：acid (ic) oxide
说明:酸性氧化物是一类能与水作用生成酸或与碱作用生成盐和水的氧化物。一般是非金属元素的氧化物和某些过渡金属元素的高价氧化物。例如三氧化硫SO3、五氧化二磷P2O5、七氧化二锰Mn2O7、三氧化铬CrO3等。
我们知道,碱跟酸反应生成盐和水,碱跟某些非金属氧化物反应,也生成盐和水.例如
2NaOH+H2SO4=Na2SO4+2H2O
2NaOH+CO2=Na2CO3+H2O
Ca(OH)2+SO3=CaSO4+H2O
上述反应表明,二氧化碳,三氧化硫跟酸的性质相似.因此,人们把二氧化碳,三氧化硫这样能跟碱反应生成盐和水的氧化物,称为酸性氧化物.
非金属氧化物大多数是酸性氧化物,我们熟悉的非金属氧化物中,一氧化碳和一氧化氮不是酸性氧化物，通常将其归入不成酸氧化物.
性质及其他：
1、酸性氧化物大多数能跟水直接化合生成含氧酸.
CO2+H2O=H2CO3
SO3+H2O=H2SO4
SO2+H2O=H2SO3 (亚硫酸)
2、含氧酸也可以受热分解生成酸性氧化物.例如,将硫酸加热可得到三氧
化硫和水:
H2SO4=SO3↑+H2O
在这里三氧化硫可以看做是硫酸脱水后的生成物,因此也把酸性氧化物叫做酸酐.
SiO2,N2O5,也是酸性氧化物，但二氧化硅不溶于水，不能与水直接化合生成硅酸
3、判定酸性氧化物最重要依据是化学反应前后各元素化合价保持不变.
特例：
二氧化硅是较特殊的酸性氧化物。
二氧化硅可以和氢氟酸反应，但不能同水反应。
注意：
酸性氧化物中大多数是非金属氧化物
非金属氧化物中大多数是酸性氧化物
含氧酸才有酸性氧化物

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Answer 2

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Answer 3

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Answer 4

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Answer 5

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Answer 6

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