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. `2.32 g`
D. `2.64 g`

Answer

A

Explanation

`Ag_(2) CO_(3) rarr 2 Ag + CO_(2) + (1)/(2) O_(2)`
`276 g Ag_(2) CO_(3)` gives `2 xx 108 = 216 g` residue
`2.76 g Ag CO_(3)` gives `2.16 g` residue (silver)