In biological cells that have a plentiful supply of O2, glucose is oxidized completely
Chapter 2, Problem 2.42(choose chapter or problem)
In biological cells that have a plentiful supply of O2, glucose is oxidized completely to CO2 and H2O by a process called aerobic oxidation. Muscle cells may be deprived of O2 during vigorous exercise and, in that case, one nkT Nl kT l DEF 1 + 1 ABC kT 2l molecule of glucose is converted to two molecules of lactic acid (CH3CH(OH)COOH) by a process called anaerobic glycolysis (see Impact I7.2). (a) When 0.3212 g of glucose was burned in a bomb calorimeter of calorimeter constant 641 J K1 the temperature rose by 7.793 K. Calculate (i) the standard molar enthalpy of combustion, (ii) the standard internal energy of combustion, and (iii) the standard enthalpy of formation of glucose. (b) What is the biological advantage (in kilojoules per mole of energy released as heat) of complete aerobic oxidation compared with anaerobic glycolysis to lactic acid?
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