Final Revision Lesson for last SAC

Calculate the volume of water required at SLC to hydrolyze 0.4 mol of triglyceride (Vm - 24.8L)

A food chemist is comparing the melting points of two different triglycerides. One tryglyceride consists mostly of oleic fatty acid residues, and the other consists of stearic acid residues. Explain which triglyceride is likely to be a wax at room temperature and which is most likely to be an oil (3 m)

Write the balanced chemical question for the combustion of the disaccharide maltose, which is composed of two glucose monomers (Mr of glucose - 180g/mol) (1m)

A chemist wanted to find the energy contest of maltose. He calibrated a calorimeter by running a 2.4A current with 1.0V for 2 Minutes. He obtained a temperature increase of 15.6 degrees Celcius. What is the calibration factor of this calorimeter? (2m)

What does a calibration factor tell the chemist? (1)

What percentage of energy did the water actually absorb from the battery pack? The calorimeter contains 250g of water (2)

The chemist used the graph attached to find the change in temperature. Explain how would you use this graph to find the temperature change, and why this method is more accurate.

10.g of maltose was completely combusted in the calorimeter, and a temperature change of 32.4 degrees Celcius was achieved. What is the energy content of maltose in kJ/mol (3)

An experiment was run of the effectiveness of lipase, an enzyme secreted into the small intestine that helps the hydrolysis of lipids. Two test tubes containing olive oil were placed in water baths, one at 37 and one at 45 degrees. What could you do to measure the rate of hydrolysis of the olive oil? (1m)

No change was seen in the test tube in the water bath at 45 degrees. Explain why this result was obtained (3marks)