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i have a chemist has a whole bunch of chemicals that includes,
copper sulfate, sodium silicate, calcium hydroxide, citric acid, potassium iodide, sodium solfate, aluminum ammonium sulfate, ammonium chloride, magnesium sulfate, sodium carbinate, cobalt chloride, calcium nitrate, ferrous sulfate, methlene blue, phenolphthalein, universal indicator. what do i mix with what? plz help thanks,

2006-12-29 18:03:50 · 2 answers · asked by Anonymous in Science & Mathematics Chemistry

2 answers

I don't understand your question. What is your project?

2006-12-29 21:46:11 · answer #1 · answered by Anonymous · 0 0

You have a bunch of compounds (not counting the methylene blue, phenolphthalein and universal indicator which are all INDICATORS, a special kind of compound).

Are your chemicals solids or are they solutions? If they are not mixed with water already the first thing you want to do is mix them with water. Use the same quantity of powder (use a balance if you can get one) and mix them with the same quantity of water (preferably distilled water you can get at the grocery store). Use about 1 gram of each solid (or 1/2 tsp. if you don't have a balance) and about 25 mL's of water. You now have water SOLUTIONS of your chemicals.

First question to be answered: which ones dissolve in water.

Second question to be answered: how acidic or basic are the water solutions? To answer this mix a small quantity of each of your solutions with each of the three indicators. Do some research to find out what the indicator colors mean.

Third question to be answered: what happens if you mix the solutions in sets of 2? Do you get precipitates (a cloudy resulting mixture); do you get a gas (look for bubbles); do you get a color change (doesn't turn cloudy but does give a new color); or does it appear that nothing happens?

Make a chart and make all the possible combinations of 2. Use only the solutions that dissolved in water; those that don't dissolve won't react.

Last question: How acid or basic are the mixed solutions? For each of your combinations test the mixture with the three indicators to see if you get any different results.

Write up your results, trying to find patterns in the reactions if possible.

Good luck and remember to wear goggles and clean up carefully.

2006-12-30 14:39:19 · answer #2 · answered by The Old Professor 5 · 0 0

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