Question
please show work
please answer questions 2, 3, & 4
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Experiment 33 Advance Study Assignment: Preparation of Copper(l) Chioride 1 Suppose the Cu lons in this esperiment are prosduced by the reaction of 0 94 g of copper turnings with excess nitric acid How many moles of Cu are produced? Cu copper to prepare the CuCl, solution? 2 Why isa't hydroxchloric acid uwed in a direct reaction with 3 How many grams of metallic copper are required to react with the number of moles of Cu" calculated in Problem 1 to form the CuCI? The overall reaction can be taken to be: 4. What is the theoretical maximum mass of CuCl that can be prepared from the reaction sequence of this experiment, using 0.94 g of Cu turnings to prepare the Cu solution? le of the compound prepared in this experiment, weighing 0,0998 g. is dissolved in HNO, and diluted to a volume of 100 mL. A 10-mL aliquot of that solution is mixed with 10 ml. 6 M NE. The Cu(NH,)', I in the resulting solution is found to be 5.12 x i0° M. a. How many moles of Cu were in the original sample, which had been effectively diluted to a volume of 200 ml? moles (continued on following page
Explanation / Answer
2)
No, HCl acid does not react with copper.(reactivity series)
Only those metals whose standard reduction potentials are lower than that of hydrogen react with non-oxidising acids like HCl and dil.H2SO4, and displace hydrogen from them.Copper has higher reduction potential (more positive) than hydrogen, and it does not react with HCl acid.However, copper (Cu) is lower down in the reactivity series than hydrogen and this means that it is incapable of displacing the H from HCl.
