Mole ConceptMedium

Question

How many grams of residue is obtained by heating 2.76 g of silver carbonate?

(Given: Molar mass of C, O and Ag are 12, 16 and 108 g mol⁻¹ respectively)

Options

A.1.08 g
B.2.16 g
C.3.24 g
D.4.32 g

Solution

Sol. Ag₂CO₃(s) →Δ 2Ag(s) + CO₂(g) + 1/2 O₂(g)

1/100 mol

Moles of Ag(s) = 2/100 mol

Mass of residue = 2.16 g

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