1 mole each of CaC(2), Mg(2)C(3) reacts ...

1 mole each of `CaC_(2), Mg_(2)C_(3)` reacts with excess water in separate open flasks work done by the gas during the dissolution shows the order:

`CaC_(2) = Mg_(2)C_(3) lt Al_(4)C_(3)`

`CaC_(2)= Mg_(2)C_(3)= Al_(4)C_(3)`

`Mg_(2)C_(3) lt CaC_(2) lt Al_(4)C_(3)`

`Mg_(2)C_(3) lt Al_(4)C_(3) lt CaC_(2)`

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