HOW TO MAKE POTASSIUM SODIUM 2,3-DIHYDROXYBUTANEDIOATE TETRAHYDRATE

HOW TO MAKE POTASSIUM SODIUM 2,3-DIHYDROXYBUTANEDIOATE TETRAHYDRATE KNOWN AS ROCHELLE SALT............SO TO RECAP...........mix cream of tartar with sodium carbonate and (heat is optional but will make the reaction faster with a slightly better yield)..................HOWEVER WHEN YOU LET IT COOL DOWN TO GET YOUR CRYSTALS...............it is best NOT to use heat to evaporate the water. Place it in a non heated spot and then put in the refrigerator right before you filter the crystals out. If you try to evaporate the water off using heat you have a good chance the product will solidify like when making hot ice (sodium acetate) into a gel. And gels cannot be washed clean with water like crystals can. KEEP IN MIND I AM NOT GOING OVER STEREO CHEMISTRY EVEN THOUGH ROCHELLE SALT IS A STEREO OPTICAL ISOMER IN THIS VIDEO. WITH 2 CHIRAL CENTERS....... THAT IS FOR A FUTURE VIDEO......... I am making this for 2 reasons. 1) to show that when making the salt of a carboxylic acid the procedure is the same or very similar no matter how big the carboxylic acid molecule is ((as long as the rest of the molecule is not reactive to sodium carbonate. )) and 2.) i want to make Fehling's solution from it. .........................i guess i should mention the piezoelectric effect of rochelle salt. Piezoelectric means you can create electricity from the crystal by applying pressure(mechanical stress) to the crystal.....and i am GUESSING if you do the opposite.....meaning i jam some electric through the crystal it will contract/expand the crystal ..................rochelle salt is the BEST piezoelectric crystal by far