Anne was given a bottle containing a mixture of substances and was instructed to determine its contents. List the tests Anne would have to perform and describe the observations she is expected to make if the mixture contained carbonated water, rubbing alcohol, vinegar, and bleach.
use crystallization and distillation to get rid of these...they can be used in one method and not the other...
2007-01-20 15:30:03 · 2 answers · asked by GorGeOuS 3 in Science & Mathematics ➔ Chemistry
The problem is internally inconsistent. "Bleach" is a highly alkaline solution of sodium hypochlorite in water. Vinegar is a 5% solution of acetic acid in water. If the OH- concentration of the bleach is greater than the H+ concentration of the vinegar, then one does not have vinegar anymore. One has a solution of sodium acetate. If the H+ concentration of the vinegar is greater than the OH- concentration of the bleach, then the bleach will decompose spontaneously, bubbling chlorine gas out of the mixture and coproducing chlorate or perchlorate ions as a biproduct. Presence of carbonated water would only add carbon dioxide pressure to the strain on the bottle.
The greatest test of Anne's life will be to hand the bottle back to the teacher, say, "'Bye! I gotta go now!" and run from the classroom. This will leave the teacher looking quizzically at the bottle until...
2007-01-20 16:49:50 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
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2016-11-25 23:17:06 · answer #2 · answered by ? 4 · 0⤊ 0⤋