Question

use the following information to answer the next question. a standard copper - silver cell descriptions of electrochemical cells 1 this is a voltaic cell. 2 this is an electrolytic cell. 3 the mass of cu(s) increases. 4 the mass of ag(s) increases. 5 a spontaneous reaction occurs. 6 a nonspontaneous reaction occurs. 7 anions flow toward the cu(s) electrode. 8 anions flow toward the ag(s) electrode. 9. the electrochemical cell descriptions that apply to this operating, standard copper - silver cell are numbered __ and __. record all four digits of your answer in any order in the numerical response section on the answer sheet. record your answer with no comma and no space

Explanation:

Step1: Identify cell type

A standard copper - silver cell is a voltaic cell as it generates electricity from a spontaneous redox reaction, so 1 is correct and 2 is incorrect.

Step2: Determine electrode reactions

At the copper electrode, oxidation occurs: $Cu(s)
ightarrow Cu^{2 + }(aq)+2e^{-}$, so the mass of $Cu(s)$ decreases. At the silver electrode, reduction occurs: $Ag^{+}(aq)+e^{-}
ightarrow Ag(s)$, so the mass of $Ag(s)$ increases, thus 4 is correct and 3 is incorrect.

Step3: Check reaction spontaneity

Voltaic cells have spontaneous reactions, so 5 is correct and 6 is incorrect.

Step4: Analyze anion flow

Anions flow towards the anode. In a voltaic cell, the anode is where oxidation occurs (copper electrode here), so anions flow towards the $Cu(s)$ electrode, 7 is correct and 8 is incorrect.

Answer:

1457