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1) Which flask produced the most carbon dioxide at 1 minute?
Flask "B" produces the most carbon dioxide after 1 minute.
2) Explain why flasks "B", "C" and "D" produced less carbon dioxide than flask "A".
It appears that flasks "B", "C" and "D" ran out of acid. Flask "A" with the extra volume of acid produced more carbon dioxide.
3) Irene was heard to comment "The experiment shows that the amount of carbon dioxide produced after ten minutes depends on the temperature." Is this correct?
Since flasks "B", "C" and "D" produced the same amount of carbon dioxide after ten minutes this statement is false.
4) What is the effect of temperature on the reaction?
A high temperature makes the reaction proceed faster than at a lower temperature.