Module 3 Scenario Problem.docx - MODULE 3 SCENARIO-BASED...

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MODULE 3 SCENARIO-BASED PROBLEM FOOD AS ENERGY – FUEL FOR LIFEQ1. What functional groups are present in each molecule?
Q2.Write balanced chemical equations for the aerobic respiration reaction of sucrose, showing how it reacts with oxygen to produce energy?
Q3. The molar enthalpy of combustion of sucrose,rHo= is -5645 kJ mol-1. What term (one word) is used to describe a chemical reaction with a negative change in enthalpy?
Q4. Calculate the molecular weights of both sucrose and palmitic acid, by summing the contributions from C, H and O atoms and enter your data in the table below. (Useful data: relative atomic masses C12.01, H 1.01, O 16.00).Q5. Calculate the number of moles in 1.00 g of sucrose and of palmitic acid. Enter your answers in the table below. (Hint: n = m/MW).Q6. Calculate the energy released by respiration of 1.00 g of sucrose and of palmitic acid. Enter your answers in the table below. (hint: use the number of mol from the previous Q, along with the molar enthalpy of combustion)Q7. Based on the energy released in respiration per gram, which is the more potent fuel source, sugaror fat? Is this consistent with the notion that each new CO bond made via oxidation releases energy?

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