[asmeet]

can someon please help me with this ! i dont knwo whats the right answer

A solution is prepared by dissolving 3.0 g iron(II) chloride (MW = 126.8 g/mol) with 75.0 mL of water. The density of the solution is 1.21 g/mL and the density of water is 1.0 g/mL. A student takes 10.0 mL of this solution and dilutes it with water to 250 mL (3 SF). What is the molar concentration of chloride ion in the diluted solution?


a. 0.030 M
b. 0.26 M
c. 0.73 M
d. 0.64 M
e. 0.13 M

[opti384]

You should first start with determining the molar concentration of the Iron(II) chloride solution before diluting.

Then, find how many moles of Iron(II) chloride will be in 10 ml of the solution and then calculate the molar concentration with total 250ml of water.

[JGK]

Is this really an undergraduate level question