CAPE Chemistry Unit 2 · 2014 · Paper 1 · Question Q19

A 300\text{-mg} solid sample containing chloride is dissolved in water. The chloride is then precipitated as \text{AgCl} by the addition of silver nitrate to the solution of the sample. The precipitate is collected, washed, dried and weighed, and found to have a mass of 525\text{ mg}. (\text{RAM of Cl} = 35.5, \text{Ag} = 108) The mass of chloride present in the sample is

1. (A)74.2\text{ mg}
2. (B)118.0\text{ mg}
3. (C)129.9\text{ mg}
4. (D)208.0\text{ mg}