Question

2.76 g of silver carbonate (at. mass of Ag = 108 ) on being heated strongly yields a residue weighing ?

Answer 1

2.76g of silver carbonate on heating gives216/276*2.76=2.16 here 276is molwt ofAg2co3 Ag=108 Ag2co3 provide 2Ag=108*2=216

Answer 2

By Thermal Decomposition we would break Ag2CO3, we would be getting

$\blue{\boxed{Ag2CO3 - - - > 2Ag + CO2 + \frac{1} {2} O2}}$

Therefore Molar mass of Silver = 2× 108 = 216g

Thus, 2.76g of Ag2CO3 give $\frac{216} {276} ×2.76$ =2.16g

Hence $\bf{\red{2.16}}$ of residue is left

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