Question

Elmsfeuer rhubarb contain oxalic acid.

1.00 kg Elmsfeuer rhubarb is blended. Water is added until there is 2 liters of juice.

Soluble oxalic% of fresh weight: 0.34
Soluble oxalic% of dry weight: 6.8

Question: Calculate the formal molar concentration of oxalic acid in the rhubarb juice.

(Sorry for the poor translation)

Answer 1

Btw. the Elmsfeuer rhubarb is of fresh weight.

Answer 2

I believe that you find 0.34 % of the 1kg, and then you have the mass (m) of oxalic-acid. Then you find the amount of substance of oxalic acid by using (n=m/M). When you have the amount of substance you can find the molar concentration by using (C=n/V), where V is 2 Liters.

Am i right on this?

Answer 3

\(\sf\color{green}{ya}\;m\color{yellow}{on}\)