Question

15g of FeCI3 is dissolved in 450 mL of solution. What is the concentration of [CI-]?

Answer 1

The concentration of [CI-] : 0.617 M

Further explanation

FeCl₃ dissolved in 450 mL of solution(will dissociate )

Reaction

FeCl₃⇒Fe³⁺+3Cl⁻

• mol FeCl₃(MW=162,2 g/mol)

`\tt (15)/(162.2)=0.0925`

• mol Cl⁻ :

`\tt (3)/(1)* 0.0925=0.2775`

• molarity of Cl⁻ :

`\tt (0.2775)/(0.45)=0.617~M`