`A\" \" 5.0 g` sample of felspar containing `Na_(2)O,K_(2)O` and some inert impurity is d
Channel: Doubtnut
Date: 02/02/2020

`A\" \" 5.0 g` sample of felspar containing `Na_(2)O,K_(2)O` and some inert impurity is dissolved in dilute `HCl` solution and `NaCl` and `KCl` formed are separated by fractional crystallization. During crystallization some less soluble impurities also come out. Mass of `NaCl, KCl` and impurity accompanying these salts was found to be `6.47 g`. Solid crystal was then re-dissolved and required `300mL` of `0.3M AgNO_(3)` for complete precipitation of chlorides. The precipitate this, obtained ws found to contain `4.23%` insoluble impurity. Determine mass percentage of `Na_(2)O` and `K_(2)O` in the original sample: