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Consider the molecule glycine NH2CH2COOH which is a solid at standard conditions. a) Write the chemical...

Consider the molecule glycine NH2CH2COOH which is a solid at standard conditions.
a) Write the chemical equation whose enthalpy change defines the enthalpy of combustion of glycine where nitrogen gas is evolved.

b) Write the chemical equation whose enthalpy change defines the standard enthalpy of formation of glycine.

c) Write the chemical equation whose enthalpy change defines the enthalpy of fusion of glycine.

d) Write the chemical equation whose enthalpy change defines the bond enthalpy of glycine.

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Answer #1

a) Write the chemical equation whose enthalpy change defines the enthalpy of combustion of glycine where nitrogen gas is evolved.

b) Write the chemical equation whose enthalpy change defines the standard enthalpy of formation of glycine.

The standard enthalpy of formation is the change in enthalpy when one mole of a substance in the standard state is formed from its pure elements in their most stable states under the same conditions.

Thus, for the formation of fructose, the thermochemical equation is

c) Write the chemical equation whose enthalpy change defines the enthalpy of fusion of glycine.

The process or result of joining two or more things together to form a single entity.

A product is Glycylglycine; C4H8N2O3

d) Write the chemical equation whose enthalpy change defines the bond enthalpy of glycine.

Bond enthalpy: energy to break 1 mol of bond

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