What is the concentration of Iodine I2 molecules in a solution containing 2.54 g of iodine 250 cm3 of solution? A 0.01mol/dm3 B 0.02mol/dm3 C 0.04mol/dm3 D 0.08mol/dm3

C. 0.04 moles per cubic decimeter.

Explanation:

The molar mass of the Iodine is 253.809 grams per mole and a cubic decimeter equals 1000 cubic centimeters. The concentration of Iodine (), measured in moles per cubic decimeter, can be determined by the following formula:

(1)

Where:

- Mass of iodine, measured in grams.

- Molar mass of iodine, measured in grams per mol.

- Volume of solution, measured in cubic decimeters.

If we know that , and , then the concentration of iodine in a solution is:

Hence, the correct answer is C.