S18.pdf Open with ? in a copper sulfate (CuSO.) solution. The salt bridge contai
ID: 1043128 • Letter: S
Question
S18.pdf Open with ? in a copper sulfate (CuSO.) solution. The salt bridge contains potassium chloride (KCI) solution. Note that direction of electron flow is shown with arrows. NO Cul NO, Cu so, NO NO, ZnP ?" 8. The overall reaction that takes place in the cell above is- -> Zn2. 9. Which ONE of the following statements is true concerning the voltaic cell above ? A) The Cu cathode mass increases as the cell discharges 8) The Cu anode mass decreases as the cell discharges C) The Cu anode mass increases as the cell discharges. D) The Cu cathode mass decreases as the cell discharges E) The mass of the Cu electrode does not change as the cell discharges. 10. Which ONE of the following statements is true concerning the half-cell on the left with the zinc electrode as the voltaic cell discharges? A) [2n2'] decreases with time, and |CI] increases with time. B) [2n2] increases with time, and (CI-] increases with time C) (2n"] decreases with ti D) IZn'] decreases with t E) [Zn2] increases with tin Page 213iQ+Explanation / Answer
3)1) Zinc is higher placed in reactivity series and can reduce Cu and reaction taking place would be
Zn + Cu2+ -----> Zn2+ + Cu
2) As Cu2+ from solution is converted to Cu electrode the mass of Cu is increased.(cathode mass increases).
3) The [Zn2+] increases with time and Cl- decreases with time.
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