Final answer:
To calculate the concentration of I- after diluting a 1.0 M KI solution from 12 ml to a total of 112 ml, the dilution formula M1V1 = M2V2 is used, resulting in a concentration of 0.1071 M for I-.
Step-by-step explanation:
The concentration of I- in a diluted solution is calculated using the dilution formula M1V1 = M2V2, where M1 and V1 are the initial molarity and volume, and M2 and V2 are the molarity and volume after dilution respectively. Given a starting solution of 1.0 M KI with a volume of 12 ml that is diluted to a total volume of 100 ml + 12 ml = 112 ml, the resulting concentration of I- is calculated as follows:
M1V1 = M2V2
(1.0 M) x (12 ml) = M2 x (112 ml)
12 M*ml = 112 ml * M2
M2 = 12 M*ml / 112 ml
M2 = 0.1071 M
Therefore, the final concentration of I- in the diluted solution is 0.1071 M.