Three students are asked to discuss the percent error obtained from this lab and explain some sources of error that would account for the discrepancy
seen, if any. Select the student that employs correct scientific reasoning.
• Student 1: If the reaction was not allowed to go to completion, the sodium bicarbonate would
not have fully decomposed, making the final mass higher than the theoretical.
Student 2: If the baking soda was not heated long enough, the final mass of solid product would
be low
Student 3: The student didn't weigh the masses correctly therefore human error is the main
source of discrepancy.
.
O Student 1
O Student 2
OStudent 3