we did an experiment where we found the % of water in a hydrate BaCl2.2H20. by doing mass of H20 lost divided by Mass of Bacl.2H20 times 100. Why is this method unsuitable for other hydrates, and we used crucibles for the experiment but we had to measure the crucible exactly after it cooled not later y is dat??
2006-11-14 14:45:50 · 2 answers · asked by Preeya 5 in Science & Mathematics ➔ Chemistry
well, what i do know is that the reason you are supposed to wait until after the crucible has cooled is because, when using a fine balance, if heat is being given off it can give you an incorrect weight
2006-11-14 15:00:37 · answer #1 · answered by trueblonde6318 1 · 1⤊ 0⤋
Some salts (like BaCl) can suck water vapor out of the air, changing the mass you would be weighing. This would give a wrong answer.
2006-11-14 23:20:47 · answer #2 · answered by rb42redsuns 6 · 1⤊ 0⤋