**Passage 11 (continued):** <br> **Q2:** The percentage of silver in the alloy is ( of ): — Redox Reactions and Volumetric Analysis Chemistry Question
Question
**Passage 11 (continued):** <br> **Q2:** The percentage of silver in the alloy is ($Mw$ of $Ag = 108$):
Answer: A
💡 Solution & Explanation
**Step 1:** Moles $SCN^-$ = $25 \times 0.1 / 1000 = 0.0025$. <br>**Step 2:** Moles $Ag^+$ = Moles $SCN^-$ = $0.0025$. <br>**Step 3:** Mass $Ag = 0.0025 \times 108 = 0.27$ g. <br>**Step 4:** $\%$ Ag = $(0.27 / 2.0) \times 100 = 13.5\%$.
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