What is the heat of reaction in going from graphite to diamond?

The enthalpies of combustion for graphite and for diamond are, respectively, —394 kJ/mol and —396 kJ/mol.

What is heat of transformation of graphite to diamond?

The enthalpies of combustion of graphite and diamond are 393.5 kJ and 395.4 kJ respectively. Calculate the enthalp change accompanying the transformation of 1 mole of graphite into diamond.

What is heat of transformation of graphite?

C (graphite) +21​O2​→CO ;ΔH=−110. … CO+21​O2​→CO2​ ;ΔH=−283. 2 kJ/mol. The heat of reaction (in kJ/mol) for the following reaction is: C(graphite)+O2​→CO2​

What is the heat of formation of diamond?

Standard Heat of Formation

Substance ΔHfº (kJ/mol)
Br2(g) 30.91
C (s, graphite)
C (s, diamond) 1.90
CH4(g) -74.85

What type of reaction is diamond to graphite?

The conversion of diamond into graphite is an endothermic reaction.

What is Hess’s law used for?

Hess’ law can be used to determine the overall energy required for a chemical reaction, when it can be divided into synthetic steps that are individually easier to characterize. This affords the compilation of standard enthalpies of formation, that may be used as a basis to design complex syntheses.

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Which of the following represents standard heat of formation of water?

The heat of formation of water is 260 kJ.

What is a heat of formation reaction?

heat of formation, also called standard heat of formation, enthalpy of formation, or standard enthalpy of formation, the amount of heat absorbed or evolved when one mole of a compound is formed from its constituent elements, each substance being in its normal physical state (gas, liquid, or solid).

Why is graphite more stable than diamond?

Diamond does not contain any delocalised electrons. Graphite containes one delocalised electron per carbon. These cause greater attraction between carbon atoms hence giving stronger bonds, more stability to the structure.

What is the heat of reaction?

heat of reaction, the amount of heat that must be added or removed during a chemical reaction in order to keep all of the substances present at the same temperature.

Is graphite to diamond exothermic or endothermic?

The conversion of diamond into graphite is an endothermic reaction.

Why does diamond not turn into graphite at room temperature?

At high pressure, diamond is the most stable configuration of pure carbon and not graphite. … Also note that since diamond is made out of carbon, diamond can burn just like coal. Therefore, if enough oxygen is present, diamond at high temperature will combust to form carbon dioxide rather than transform into graphite.

Why is graphite to diamond endothermic?

If the bonds broken are stronger than the bonds formed, the reaction is endothermic. Chemical reactions are a result of breaking and forming bonds between molecules and atoms. Breaking existing bonds requires energy while forming bonds releases energy.

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