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In which of the following reactions the ...

In which of the following reactions the standard heat of reaction is equal to the standard heat of formation of `CaBr_(2)(s)` at `25^(@)C`?
(i) `Ca(s)+Br_(2)(l)toCaBr_(2)(s)`
(ii) `Ca(s)+Br_(2)(g)toCaBr_(2)(g)`.

Text Solution

Verified by Experts

Reaction (i), because at `25^(@)C` the standard state of bromine is `Br_(2)(l)`.
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