KCET · Chemistry · Some Basic Concepts of Chemistry
\(1 \mathrm{~g}\) of silver gets distributed between \(10 \mathrm{~cm}^{3}\) of molten zinc and \(100 \mathrm{~cm}^{3}\) of molten lead at \(800^{\circ} \mathrm{C}\). The percentage of silver in the zinc layer is approximately
- A 89
- B 91
- C 97
- D 94
Answer & Solution
Correct Answer
(C) 97
Step-by-step Solution
Detailed explanation
Concentration of Ag in zinc \(=\frac{x}{10}\)
\(\therefore\) Concentration of \(\mathrm{Ag}\) in \(\mathrm{Pb}=\frac{1-\mathrm{x}}{100}\)
\[
\frac{\frac{x}{10}}{\frac{1-x}{100}}=300
\]
On solving, we get \(\mathrm{x}=97 \%\)
\(\therefore\) Concentration of \(\mathrm{Ag}\) in \(\mathrm{Pb}=\frac{1-\mathrm{x}}{100}\)
\[
\frac{\frac{x}{10}}{\frac{1-x}{100}}=300
\]
On solving, we get \(\mathrm{x}=97 \%\)
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