we can use the dilution equation when preparing diluted solutions from concentrated solutions c1v1 = c2v2 where c1 is concentration and v1 is volume of the concentrated solution c2 is concentration and v2 is volume of the diluted solution prepared substituting these values in the equation 2.00 M x V = 1.00 M x 100.0 mL V = 50.0 mL 50.0 mL of concentrated solution should be taken and filled up to 100.0 mL to prepare a 1.00 M solution