Why standard heat of formation of diamon...

Why standard heat of formation of diamond is not zero though it is an element ?

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The standard heat of formation of a compound is the :

Standard enthalpy of formation is non zero for

The standard heat of formation of sodium ions in aqueous solution from the following data: heat of foramtion of NaOH(aq.) at 25^(@)C=-470.7kJ heat of formation of OH^(-) (aq.) at 25^(@)C=-228.8kJ is:

Standard heat of formation of caebonmonooxide at 298 K is -110.5 kJ. Calculate the standard heat of formation of carbon mono oxide at constant volume and 298 K.

Standard enthalpy of formation is zero for.

Standard enthalpy of formation is zero for

CBSE COMPLEMENTARY MATERIAL-CHEMICAL THERMODYNAMICS-1-Mark Questions

Why Delta H is more significant than Delta U ?
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Write one example each of extensive and instensive properties.
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Write a chemical equation in which Delta H and Delta U are equal.
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Write the relationship between Delta H and Delta U for the reaction. ...
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Define standard enthalpy of formation.
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Why standard heat of formation of diamond is not zero though it is an ...
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The enthalpy of atomization of CH(4) is 1665 kJ mol^(-1). What is the ...
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Identify the species for which Delta(f) H^(theta) = O(3), at 298 K, Br...
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For the reaction 2Cl(g) rarr Cl(2)(g), what are the signs of DeltaH ...
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For an isolated system, DeltaU = 0 , what will be DeltaS?
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Why entropy of steam is more than that of water at its boiling point?
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Out of Diamond and Graphite which has higher entropy?
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Write an example of endothermic spontaneous reaction.
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State second law of thermodynamics.
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State the third law of thermodynamics.
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Which has more entropy ? 1 mol H(2)O (I) " at " 25^(@)C or 1 mol H(2)O...
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At what temperature the entropy of a perfectly crystalline solid is z...
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For a certain reaction Delta G^(theta) = 0, what is the value of K(c )...
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How can a non spontaneous reaction be made spontaneous ?
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For a reaction both Delta H and Delta S are negative. Under what condi...
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