why must the flask and glass tubing be dry at start?
2007-08-22 00:10:19 · 3 answers · asked by xela r 1 in Science & Mathematics ➔ Chemistry
To provide accuracy to your experiment
http://chem.pdx.edu/~atkinsdb/teach/321/CALVOL.htm
2007-08-22 00:14:22 · answer #1 · answered by SirSnoozeAlot 4 · 0⤊ 0⤋
There are several reasons.
Often you need to weight materials, at the start and at the end. Water will add to weight of the container and may interfere with the measurement.
Water can and often does influence reactions. This fouls up your experiment. Water can become a reaction product or a catalyst - either way it influences.
Good discipline requires clean equipment - it is just good practice.
Often water can interfere with the measurements of reaction product - making it harder to determine accurately what is produced.
2007-08-22 07:20:47 · answer #2 · answered by GTB 7 · 0⤊ 0⤋
because 1.) if the chemicals you're using react with water, you could have a MAJOR problem.
2.) even if the chemicals don't react with water, introducing water into the equation could give you different results from what you're looking for
2007-08-22 07:16:53 · answer #3 · answered by rockdog57 2 · 0⤊ 0⤋