After the chemistry lecture on single replacement redox reactions, your classmat
ID: 865590 • Letter: A
Question
After the chemistry lecture on single replacement redox reactions, your classmate tells you he has come up with a plan to produce gold and get rich. His plan involves ordering 275.00 mL of a solution of aqueous Au(NO3)3 (gold (III) nitrate) at 0.0250 M and 12.250 g of Sn (tin) from a chemical company. The supplies arrive and your friend prepares to run the experiment. However, in the Au(NO3)3 solution by accident. He is unable to return to lab for another 2 weeks. In that time, 45.00 mL of water evaporated and the aqueous Au(NO3)3 solution is now 230.00 mL. If he runs the reaction now, would your answer to part (d) change? If so, by how much? If not, why not? Give your answer In coherent complete sentences.Explanation / Answer
Answer in part (d) should not change even though 45.00 mL of water evaporated. Because the amount of gold present in the solution doesnot change even though water evaporated from the solution. So amount of gold reduced by the tin does not change. But concentration of the solution changed as volume of solution changed. Concentration of the gold(III) nitrate increases as volume of solution decreases. But the number of gold(III) ions present in the solution remains same. Hence answer in part (d) should not changed.