When `2.76 g` of silver carbonate is strongly heated, it yields a residue weighing

Options

A. 2.16 g
B. 2.48 g
C. 2.64 g
D. 2.32g

Answer

A

Explanation

`2Ag_(2)CO_(3) overset(Delta) to 4Ag + 2CO_(2) + O_(2)`
`2 xx 276g" " 4 xx 108 g`
`because 2 xx 276g` of `Ag_(20CO_(3)` gives ` 4 xx 108 g `
`therefore` 1 g of `Ag_(2)CO_(3)` gives ` = (4 xx 108)/(2 xx 276)`
` therefore 2.76g` of `Ag_(2)CO_(3)` gives
`(4 xx 108 xx 2.76)/(2 xx 276) = 2.16 g`