[alt-photo] Re: Stoichiometry for the nonscientist

[David Ashcraft]

My past post:
> OK - What if I needed to mix a formula like: 180 gms potassium  
> oxalate K2C204.H2O mixed with water to make 1 liter.  I only have  
> potassium carbonate and oxalic acid on hand.
>
> I know that I can make this formula of potassium oxalate by mixing  
> potassium carbonate and oxalic acid; PC is K2CO3 and OC is C2H204.   
> Now how would I know how much of each of these to make up my  
> original formula?


And now after some tricky shenanigans I arrive at: 149.64 g of K2CO3  
and 97.59 g of C2H2O4
Would anybody agree?

David