係咪HEAT咩METAL NITRATE都有NO2?

2010-03-18 2:03 am
係咪HEAT咩METAL NITRATE都有NO2?

HEAT OTHER FORMS OF NITRATE (eg.NONMETAL)又會出d咩?

回答 (2)

2010-03-20 1:40 am
✔ 最佳答案
所有金屬既nitrate燒過之後係會出NO2同O2,剩返oxide
除左group 1 裏面sodium、potassium、rubidium、caesium同francium既nitrate
呢五隻nitrate燒過之後係出nitrite同氧氣,冇NO2
呢個牽涉到cation既polarizing power既問題
lithium nitrate雖然都係group 1既nitrate,但因為Li+夠細粒,polarizing power夠,所以個nitrate ion就冇咁stable (因為被polarize得勁d),易decompose,所以會跟大隊出NO2同O2

只需要記住得group 1除左lithium nitrate會出NO2之外,其餘同group既nitrate唔會出NO2,而其他既metal nitrate就個個畀人燒果陣都會出NO2

non-metal反而好少有nitrate
不過都數到一隻,就係nitric acid (HNO3)
佢就直頭唔使燒,擺喺光之下都會自己decompose,出水、NO2同氧氣
2010-03-19 3:09 am
唔係個個都出NO2
2NaNO3→2NaNO2+O2
2KNO3→2KNO2+O2

2010-03-18 19:10:17 補充:
但係一定會出O2
4LiNO3→2Li2O+4NO2+O2


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