Glucose standard enthalpy

Self-Test 6.15A Calculate the standard enthalpy of combustion of glucose from the standard enthalpies of formation in Table 6.5 and Appendix 2A. 

SAQ 3.9 Calculate the standard enthalpy of combustion A He for burning S-D-glucose, C6Hi206. The required values of AHf may be found in Table 3.1. 

Calculate the standard enthalpy change for the fermentation process, in which glucose (CeHiiOe) is converted to ethanol (C2H5OH) and carbon dioxide. 

If the standard enthalpy of formation of glucose is —1277 kj/mol, what is the A H° for this process You will need to get AfH° values from Appendix 2. 

Self-test 1.5 ) CalculatethestandardenthalpyofthefermentationCfiHi206(s) —> 2 C2H50H(1) -I- 2 C02(g) from the standard enthalpies of combustion of glucose and ethanol (Table 1.5). 

Glucose and fructose (Atlas S3) are simple carbohydrates with the molecular formula C6H12O6. Sucrose (Atlas S5), or table sugar, is a complex carbohydrate with molecular formula CijHjjOn that consists of a glucose unit covalently linked to a fructose unit (a water molecule is released as a result of the reaction between glucose and fructose to form sucrose). Estimate the standard enthalpy of combustion of sucrose from the standard enthalpies of formation of the reactants and products. 

Is the standard enthalpy of combustion of glucose likely to be higher or lower at blood temperature than at 25"C ... 

The standard enthalpy of formation for glucose [CsH Osli)] is —1273.3 kJAnol. What is the correct formation equation corresponding to this AHp... 

The heat of combustion of any substance can be determined from its standard enthalpy of formation and from the standard enthalpies of formation of the oxidation products, such as carbon dioxide and water. Let us consider the oxidation of glucose (reaction 9). Glucose has a rather complicated structure, but for the moment we ll just use its empirical formula ... 

Use the standard enthalpy of combustion for glucose to calculate the enthalpy of combustion for ethanol. 

If the control volume is a piece of tissue, the reaction above may take place in an aqueous solution (aq). Consider an aqueous solution of 0.01 mol/L glucose the partial pressure of carbon dioxide and oxygen are 0.07 and 0.21 atm, respectively. From Table B8, we obtain the enthalpy of formations for the components of the reaction above at the standard state (298 K and 1 atm)... 

Reaction (c) does not form a substance from its elements. Instead, a substance decomposes to its elements, so this reaction must be reversed. Next, the element carbon is given as diamond, whereas graphite is the standard state of carbon at room temperature and I atm pressure. The equation that correctly represents the enthalpy of formation of glucose from its... 

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