28. 18 g of water is electroiysed. The weight of oxygen formed will be :
(a) 16 g (b) 8 g (c) 4g (d) 2 g
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Answer:
The balanced chemical equation for electrolysis can be written as:
2H
2
O→2H
2
+O
2
Now 36g of H
2
O gives = 4g of H
2
and 32g of O
2
Therefore 18g of H
2
O gives = 2g of H
2
and 16g of O
2
Explanation:
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