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Consider the reaction : (a) 6CO_(2)(g)6H_(2)O(l)rarrC_(6)H_(12)O_(6)(s)+6O_(2)(g) (b)O_(3)(g)+H_(2)O(l)rarrH_(2)O(l)+2O_(2)(g) Why it is more appropriate to write these reactions ad : (a)6CO_(2)(g)+12H_(2)O(l)rarrC_(6)H_(12)O_(6)+6H_(2)O(l)+6O_(2)(g) (b)O_(3)(g)+H_(2)O(l)rarrH_(2)O(l)+O_(2)(g)+O_(2)(g) Also suggest technique to investigate path of the above (a) and (b) redox reaction |
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Answer» Solution :(A) Allthought the meachanism of photoynthesis is very complex but broadly speaking it may be visualized to occur in two steps in the first step `H_(2)O` decomposes to give `H_(2)` and `O_(2)` in presence of chlorophyll as the `H_(2)` thus produced reduces `CO_(2)`to `C_(6)H_(12)O_(16)`in the SECOND step during the second step some `H_(2)O` molecules are also produced as show below `12H_(2)O(I)rarr12H_(2)(g)+6O_(2)(g)` `6CO_(2)(g)+12H_(2)(g)rarrC_(6)H_(12)O_(6)(s)+6H(2)O(l)` `6CO_(2)(g)+12H_(2)O(l)rarrC_(6)H_(12)O_(6)H_(12)O_(6)(s)+6H_(2)O(l)+6O_(2)(g)` therefore it is more appropriate to write the equation for photosythesis as (iii) because it imphasis that `12 H_(2)O` are used per molecule of cabohydrate FORMED and 6 |
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