a sampe of sucrose, C12H22O12, is contaminated by sodium chloride. when the contaminated sample is burned in a bomb calorimeter, sodium chloride does not burn.
what is the percentage of sucrose in the sample if a temperature increase of 1.67 degrees C is observed when 3.000g of sample is burned in the calorimeter? sucrose gives off 5.64 times 10 to the third kJ/mol when burned.
the heat capacity of the calorimter is 22.51 kJ/degrees C
2007-11-18 09:45:30 · 1 answers · asked by belleswan 3 in Science & Mathematics ➔ Chemistry
This is bookkeeping regarding the heat. Find out how much heat is given out in the experiment. You know how much heat 1 mol sucrose gives out. So you can find out how much sucrose is in your sample, and the rest of the material weighed out is NaCl.
2007-11-18 09:54:29 · answer #1 · answered by Facts Matter 7 · 1⤊ 0⤋