Answer to Question #161754 in Physical Chemistry for Sikoki Isaiah Richman

Question

A 0.2025 g sample consisting of only BaCl₂

and KCl required 20.25 mL of 0.1200M AgNO₃ solution for the quantitative precipitation of chloride.Calculate the %Ba and %K in the sample

Answer 1

Let y g of Kcl and ( 0.2 - y ) g of BaCl₂ .

y / 74.55 + ( 0.2 - y ) × 2 / 208.23

= 20.25 × 0.12 / 1000.

Then we can find y .

Then % of Kcl = y × 100 / 0.2025

Then % of Bacl₂ = ( 0.2025 -y ) × 100 / 0.2025