hi, does anyone have any idea how to dissolve a solution of aluminium potassium sulfate and copper sulfate set hard in beakers. Have tried heating with
water with no luck. Any ideas ?
Rob.
aluminium pot sulfate
Aluminium Pot Sulfate
Hi robo,
There is a way that can be easy if you have a magnetic stirrer. Boil some water then add this to the solid crystals, and add a stirrer to the magnetic stirrer base and turn it on. Leave this until the solids have dissolved.
If this does not work make up a saturated solution of Salt Water using NaCl and bring this to the boil. The salt water will boild at a much higher temperature than water itself. Add this to the crystals and stir. This should solve your problem as the temperature will be considerably higher.
Cheers,
Robb.....
There is a way that can be easy if you have a magnetic stirrer. Boil some water then add this to the solid crystals, and add a stirrer to the magnetic stirrer base and turn it on. Leave this until the solids have dissolved.
If this does not work make up a saturated solution of Salt Water using NaCl and bring this to the boil. The salt water will boild at a much higher temperature than water itself. Add this to the crystals and stir. This should solve your problem as the temperature will be considerably higher.
Cheers,
Robb.....
Dr Robert Crosdale. MRACI. NSS. NSSA. NASA.
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
** AD ASTRA PER ASPERA - SEMPER EXPLORO **
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
** AD ASTRA PER ASPERA - SEMPER EXPLORO **
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Lyn
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aluminium pot sulfate
Robo,
Next time you do this practical advise the teachers that they need to use disposable plastic petri dishes. We did this some time back and the solution crystallised beautifully but also set like concrete. Fortunately we had used the plastic petri dishes.
Lyn
Next time you do this practical advise the teachers that they need to use disposable plastic petri dishes. We did this some time back and the solution crystallised beautifully but also set like concrete. Fortunately we had used the plastic petri dishes.
Lyn
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Slartibartfast
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kimmy
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aluminium pot sulfate
I had mine set in the small beakers to what I did then was to turn them upside down and let hot water run slowly over the base and presto the crystals popped out 
. Yes I will be using something else for them to put the liquid in next time. This is how we learn - by our mistakes 
.
. Yes I will be using something else for them to put the liquid in next time. This is how we learn - by our mistakes .