1.

Consider the following two decomposition reaction (i) 2 H_(2)O rarr 2 H_(2) +O_(2)(ii) CaCO_(3)rarr Ca + CO_(2) Which of the two isa redox rection ? Explain

Answer»

Solution :For a decompositionreaction to be redox reaction one or both the products of decomposition must be in the ELEMENTAL state therefore reaction (i) is a redox reaction since both the products i.e`H_(2)` and `O_(2)`are in the elemental state
`2 overset(+1)H_(2)overset(O)(L) rarr2 H_(2) (g)+O_(2)(g)`
but reaction (ii) is not a redox reaction since neither of the two proucts is the elemental state
`CaCO_(3)(s) rarr CaO(s) +CO_(2)(g)`


Discussion

No Comment Found