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By covention, the standard enthalpy of f...

By covention, the standard enthalpy of formation of ______ is taken as zero.

A

`OH^(-) (aq.)`

B

`H^(+) (aq.)`

C

`H^(-) (aq.)`

D

`O^(2-) (aq.)`

Text Solution

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The correct Answer is:
B
Enthalpies of formationcan also be defined for inos. Because it is not possible to make thermal measurements on individual ions, we must arbitrarily define the standard enthalpy of formation of one ion as zero. Then the values for all other ions can be deduced from calorimetric data. By convention, the standard enthalpy of formation of `H^(+)` (aq.) is taken as zero.
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