Читать книгу Food Chemistry - Dennis D. Miller - Страница 40

Note: A spreadsheet program will save you time on this exercise.

1 For each data point, subtract the control value from the treatment value.

2 Determine the total available CO2 in each of the treatments (express as moles of CO2). Assume that the baking powder contains 28% sodium bicarbonate.

3 Determine the moles of CO2 evolved at each time point. (You will need to use the ideal gas law to calculate the moles of CO2.) Transform your data to % of total available CO2.

4 Plot %CO2 evolved vs time for each of the treatments. Your plot should be similar to Figure 2.1. Be sure to indicate on your plot the point where you put the flask into the 65 °C bath.