Solder is an alloy containing the metals tin and lead. A particular sample of this alloy weighing 1.50 g was dissolved in acid. All of the tin was then converted to the +2 oxidation state. Next, it was found that 0.368 g of Na2Cr2O7 was required to oxidize the Sn2+ to Sn4+ in an acidic solution. In the reaction, the chromium was reduced to Cr3+ ion.1. Write a balanced net ionic equation for the reaction between Sn2+ and Cr2O72- in an acidic solution.2. Calculate the number of grams of tin that were in the sample of solder.3. What was the percentage by mass of tin in the solder? Can you answer these questions for me and sort of explain how you got the answer. Redox reactions are giving me the blues.

Given- Mass of alloy = 1.50 g Mass of Na2Cr2O7 = 0.368 g Oxidation of Sn2+ to Sn4+ Reduction of…

Answered: Solder is an alloy containing the…

Chemistry & Chemical Reactivity

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

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Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability

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Solder is an alloy containing the metals tin and lead. A particular sample of this alloy weighing 1.50 g was dissolved in acid. All of the tin was then converted to the +2 oxidation state. Next, it was found that 0.368 g of Na₂Cr₂O₇was required to oxidize the Sn²⁺to Sn⁴⁺in an acidic solution. In the reaction, the chromium was reduced to Cr³⁺ion.

1. Write a balanced net ionic equation for the reaction between Sn²⁺ and Cr₂O₇^2- in an acidic solution.

2. Calculate the number of grams of tin that were in the sample of solder.

3. What was the percentage by mass of tin in the solder?

Can you answer these questions for me and sort of explain how you got the answer. Redox reactions are giving me the blues.

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