MCQ
$2.76 \,g$ of silver carbonate on being strongly heated yield a residue weighing ........... $\mathrm{g}$
  • $2.16$
  • B
    $2.48$
  • C
    $2.64$
  • D
    $2.32$

Answer

Correct option: A.
$2.16$
a
(a)
$2A{g_2}C{O_3}\xrightarrow{\Delta }4Ag + 2C{O_2} + {O_2}$

$2 \times 276\,gm$ of $A{g_2}C{O_3}$ gives $4 \times 108\,gm$

$\therefore $ $1\,gm$ of $A{g_2}C{O_3}$ gives $ = \frac{{4 \times 108}}{{2 \times 276}}$

$\therefore $ $2.76\,gm$ of  $2A{g_2}C{O_3}$ gives $\frac{{4 \times 108 \times 2.76}}{{2 \times 276}} = 2.16\,gm$

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