`1 g` of a mixture containing equal no.of moles of carbonates of two alkali metals, required `44.4 mL` of `0.5 N HCl` for complete reaction. The atomic weight of one metal is `7`, find the atomic weight of other metal. Also calculate amount of sulphate formed on quantitative conversion of `1.0g` of the mixture in two sulphates.

Answer

`23, 1.3998 g`;