You wish to determine the weight percent of copper in a copper containing alloy After dissolving a 0 251 g sample of the alloy in acid, an excess of KI is added, and the Cu 2 and I ions undergo the reaction The liberated I 3 is titrated with sodium thiosulfate according to the equation (a) Designat...

a In the two reactions provided The first reaction is the formation of copperI iodide CuI from coppe ...

You wish to determine the weight percent of copper in a copper-containing alloy. After dissolving a 0.251-g

Question:

You wish to determine the weight percent of copper in a copper-containing alloy. After dissolving a 0.251-g sample of the alloy in acid, an excess of KI is added, and the Cu²⁺ and I⁻ ions undergo the reaction

The liberated I₃⁻ is titrated with sodium thiosulfate according to the equation

(a) Designate the oxidizing and reducing agents in the two reactions above.

(b) If 26.32 mL of 0.101 M Na₂S₂O₃ is required for titration to the equivalence point, what is the weight percent of Cu in the alloy?

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Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

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Question Posted: Oct 16, 2023 03:41 AM

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You wish to determine the weight percent of copper in a copper-containing alloy. After dissolving a 0.251-g

Question:

2 Cu²+ (aq) + 5 I-(aq) → 2 Cul(s) + 13(aq)

Step by Step Answer:

a In the two reactions provided The first reaction is the formation of copperI iodide CuI from coppe...View the full answer

Chemistry And Chemical Reactivity

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