Can rochelle salt for crude piezoelectric experiment extracted from sour grapes and soda? How?

01 January 2020 0 8K Report

Would there be any special treatment be required to remove other impurities (like grape skin or pomace) from the sour grape juice?
if potash and baking soda are used in non-stoichiometric amount, would the precipitate contain the excess salts that can impair piezoelectric properties?
what are the reagents required to selectively precipitate rochelle salt?
How can a single crystal be precipitated instead?
will ostwald ripening itself function to grow a large crystal?
what could be the impurities that can be trapped in the crystal and impair its piezoelectric properties?

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