How to extract sodium chloride from its solution ("Salting out" experiment)
43.4 هزار بار بازدید -
6 سال پیش
-
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In this simple experiment you’ll find out about a process that is used in the production of soap!
Safety precautions
Wear a protective mask, gloves and glasses and work in a well-ventilated room. Observe safety rules when working with concentrated acids.
Warning! Don’t try to repeat this experiment without a professional supervision!
Reagents and equipment:
* saturated sodium chloride solution (100 ml);
* concentrated sulfuric acid (50 ml);
* 3 beakers.
Step-by-step instructions
Into the saturated sodium chloride solution, pour concentrated sulfuric acid. Watch a white sediment precipitate – sodium chloride.
Processes description
When solutions of sodium chloride and sulfuric acid are mixed, sodium chloride precipitates. This is because sulfuric acid creates an excess of chloride ions in the solution. The “surplus” chloride ions leave the solution and take the sodium ions with them. This process is called salting out. This method is used for purifying, extracting and separating substances.
For cool and safe experiments to do at home sign up to MEL Science here: http://bit.ly/2KtCJTG
In this simple experiment you’ll find out about a process that is used in the production of soap!
Safety precautions
Wear a protective mask, gloves and glasses and work in a well-ventilated room. Observe safety rules when working with concentrated acids.
Warning! Don’t try to repeat this experiment without a professional supervision!
Reagents and equipment:
* saturated sodium chloride solution (100 ml);
* concentrated sulfuric acid (50 ml);
* 3 beakers.
Step-by-step instructions
Into the saturated sodium chloride solution, pour concentrated sulfuric acid. Watch a white sediment precipitate – sodium chloride.
Processes description
When solutions of sodium chloride and sulfuric acid are mixed, sodium chloride precipitates. This is because sulfuric acid creates an excess of chloride ions in the solution. The “surplus” chloride ions leave the solution and take the sodium ions with them. This process is called salting out. This method is used for purifying, extracting and separating substances.
6 سال پیش
در تاریخ 1397/03/02 منتشر شده
است.
43,430
بـار بازدید شده