Question

$2.76\, g$ of silver carbonate on being strongly heated yields a residue weighing

• A. 3.54 g
• B. 3.0 g
• C. 1.36 g
• D. 2.16 g

Answer 1

Answer: (D)

2.16 g

Answer 2

$\underset{276\,g}{Ag_2CO_3} { ->[\Delta] \underset{216\,g}{2Ag} +CO2 +\frac{1}{2}O2}$ As $276\, g$ of $Ag _{2} CO _{3}$ will give $=216\, g$ of $Ag$ So, $2.76\, g$ of $Ag _{2} CO _{3}$ will give $=\frac{2.76 \times 216}{276}=2.16\, g$