Convert the word eqt. into chemcal equation,then balance the atoms or ions on both LHS and RHS.
Lead + Oxygen --> Lead(II) oxide
Pb + 2O2 --> 2PbO
點解要兩個oxygen molecules?? (eachO2 : 2+ --> total 4+)
唔係一個已能滿足lead(4-)???
chemical equation (f.4)
2011-10-26 6:06 am
回答 (3)
2011-10-30 10:48 pm
✔ 最佳答案
Lead + Oxygen --> Lead(II) oxidePb + 2O2 --> 2PbO
↓
2Pb + O2 --> 2PbO
參考: myself
2011-10-28 3:47 am
首先, O 係2- 唔係2+
第2, 個名叫lead (II) oxide
即係lead 係2+, 唔係4+, 都唔係4-
已解
第2, 個名叫lead (II) oxide
即係lead 係2+, 唔係4+, 都唔係4-
已解
2011-10-26 6:44 am
One mole of oxygen and two moles of lead are required.
That means:
2Pb + O2 --> 2PbO
2011-10-25 22:45:46 補充：
By the way, there are no such things as O^4- and Pb^4+.
It should be Pb^2+ and O^2-.
That means:
2Pb + O2 --> 2PbO
2011-10-25 22:45:46 補充：
By the way, there are no such things as O^4- and Pb^4+.
It should be Pb^2+ and O^2-.
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