Question
Each of these beakers contain a different salt solution. You also have a copper disk. Only one of these solutions will react with the copper disk. Can you guess which one?
a) Cu + MgSO4 ---> CuSO4 + Mg, E - -2.37-0.34 = -2.71V
b) Cu + Zn(NO3)2 ---> Cu(NO3)2 + Zn, E = -0.75-0,34 = -1.1V
c) Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag, E = 0.8-0.34 = +0.46 V
a) Cu + MgSO4 ---> CuSO4 + Mg, E - -2.37-0.34 = -2.71V
b) Cu + Zn(NO3)2 ---> Cu(NO3)2 + Zn, E = -0.75-0,34 = -1.1V
c) Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag, E = 0.8-0.34 = +0.46 V
Answers
GPT 3.5
Based on the given redox reactions and their respective standard reduction potentials, the solution in beaker c) will react with the copper disk. The positive value of the standard reduction potential indicates that the reaction is spontaneous and the copper will undergo oxidation while the silver ions will undergo reduction.