3OH-(aq) + P4(s) + H2O(l) → 3H2PO2-(aq) + PH3(g)
佢未平衡喎!
左方4個o原子,右有6個????
正確answer is what?
更新1:
回glovma :點解你唔自己砌下先? 因為我只知必定生成PH3(g),但not sure 會生成 H2PO2- 可能仲有其他產品,so我不能自行平衡!
係唔係錯左?
2007-07-01 10:25 pm
http://hk.knowledge.yahoo.com/question/?qid=7007031402473
3OH-(aq) + P4(s) + H2O(l) → 3H2PO2-(aq) + PH3(g)
佢未平衡喎!
左方4個o原子,右有6個????
正確answer is what?
3OH-(aq) + P4(s) + H2O(l) → 3H2PO2-(aq) + PH3(g)
佢未平衡喎!
左方4個o原子,右有6個????
正確answer is what?
回答 (2)
2007-07-01 11:00 pm
✔ 最佳答案
是錯的正確答案應是
3OH-(aq) + P4(s) + 3H2O(l) = 3H2PO2-(aq) + PH3(g)
2007-07-01 10:32 pm
點解你唔自己砌下先?
12e- + P4 +12H2O -> 4PH3 +12OH-
P4+8OH- -> 4H2PO2- +4e-
下面x3+上面x1再減番兩邊相同的生成物就係答案
2007-07-01 20:11:43 補充：
左面先得P4同alkali medium (H2O,OH-)右面都寫埋PH3同H2PO2-你要寫half equation去balance番d式而唔可以即刻砌出黎
12e- + P4 +12H2O -> 4PH3 +12OH-
P4+8OH- -> 4H2PO2- +4e-
下面x3+上面x1再減番兩邊相同的生成物就係答案
2007-07-01 20:11:43 補充：
左面先得P4同alkali medium (H2O,OH-)右面都寫埋PH3同H2PO2-你要寫half equation去balance番d式而唔可以即刻砌出黎
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070701000051KK02085