Question

EDTA: 292.2

1. How would you make 250ml's of a 15% EDTA solution

2.How much of solution 1(above)should be used to make 500ml's of a .1% EDTA solution.

Answer 1

1. 15 g EDTA/100 = 15%.
Scale up to 250.
15 g EDTA x (250/100) = ?

2. mL1 x %1 = mL2 x %2
Substitute and solve.