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Enthalpy of Combustion

The standard ...

Question

The standard enthalpy of diamond is zero at $298 K$ and 1 atm pressure.If true enter 1 else o
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Solution

The correct option is A 0
The standard enthalpy of graphite is $z e r o$ at $298 K$ and 1 atm pressure.
The standard enthalpy of a diamond is $1.8 k J / m o l$ at $298 K$ and $1$ atm pressure.

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