100. Determine the concentration of zinc (mol / l) in t

The seller is blocked and sales of the product are suspended

100. Determine the concentration of zinc (mol / l) in the solution if, when analyzing the test solution by the method of additives, a wave of 12 mm was obtained, and after adding 5 ml of a standard solution with a concentration of 0.05 M, the wave height increased to 27 mm.