Question

1 g of silver gets distributed between $10c{m}^3$ of molten zinc and $100c{m}^3$ of molten lead at ${800}^{o}C$. The percentage of silver in the zinc layer in approximately:

• A. 89%
• B. 91%
• C. 97%
• D. 94%

Answer 1

The correct option is C 97%

Concentration of $Ag$ is zinc $=\frac{x}{10}$

$\therefore$ concentration of $Ag$ in $Pb$ $=\frac{1-x}{100}$
$\frac{\frac{x}{10}}{\frac{1-x}{100}}=300$
On solving, we get $x=97\%$