1st Year Chemistry Chapter 10 Notes

• Important Fill in the blanks of Chapter Number 10: Electrochemistry of First-year Chemistry
• Define electrochemistry.
• Define oxidation reaction with an example.
• Calculate the oxidation number of chromium in Cr2O3?
• Calculate oxidation number of Cr in CrCl3.
• What are secondary cells. Write names of any two such cells.
• Give four rules for assigning of oxidation number?
• Calculate the oxidation number of phosphorous in, (a) HPO3 (b) Na3PO4.
• Differentiate between electrolytic and Galvanic ceils?
• Differentiate between a battery and cell?
• Differentiate between electrolysis and electrolytic conduction?
• A porous plate or a salt bridge is not required in lead storage cell. Give reason?
• Impure copper can be purified by electrolytic process. Explain it?
• How anodized aluminum is produced and why it can absorb dyes? 
• What is the difference between metallic conduction and electrolytic conduction?
• What is the difference between conduction through metals and molten electrolytes?
• What is electrolysis? Give example?
• A salt bridge maintains the electrical neutrality in the galvanic cell. Explain? 
  
• Explain the function of salt bridge?
• Define oxidizing agent and reducing agent.
• Define standard electrode potential.
• Write the importance of standard hydrogen electrode? OR What is standard hydrogen electrode (SHE)? OR Discuss in brief Standard Hydrogen Electrode. 
• SHE act as anode when connected with Cu electrode but as cathode when connected with Zn electrode. Justify?
• Give cathodic and anodic reactions of electrolysis of concentrated aqueous solution of sodium chloride?
• Write down the industrial applications of electrolysis. OR Write reactions involved in extraction of Sodium in Down's Cell. 
• Zn can displace hydrogen from dilute acid solution but copper cannot. Justify the statement?
• Define the electrochemical series?
• Give two examples of electrochemical series?
• Na and K can displace hydrogen from acids but Pt, Pd and Cu cannot. Comment on it?
• what is standard hydrogen electrode (SHE)?
• What is the difference between a primary cell and secondary cell?
• How does electrochemical series tell us the distinction between the oxidizing and reducing agent?
• Lead accumulator is a chargeable battery. Comment on it.
• What is industrial importance of electrolysis?
• Standard oxidation Potential of Zn is + 0.76 volts and its reduction potential is - 0.76 volts.
• Zn can displace hydrogen from dilute acid solution but “Cu" cannot?
• what is an anode and cathode?
• Zn can displace Cu from CuSO4, while Zn does not displace Mg from MgSO4 solution. Why?
• Transition elements act as Anode in alkaline battery?
• Explain electrolysis of fused PbCl2.
• Write down the construction of standard hydrogen electrode (SHE).
• What is alkaline battery or dry alkaline cell?
• What is fuel cell? How the fuel cell can be used as drinking water for an astronaut?
• How relative chemical reactivity of metals is studied with the help of electrochemical series.
• Give the reaction involved, when a lead accumulator (lead storage battery) is discharged?
• A porous plate or salt bridge is not required in lead storage cell. Why?
• How does electrochemical series explain the displacement of one metal by another from its solution?
• State rules for assigning oxidation number of elements with examples?
• Write construction and working of voltaic cell.
  
• Define electrolysis. Explain the electrolysis of very dilute solution of NaNO3.
• Give four industrial importance of electrolysis process in detail?
• What is electrochemical series? Give its four applications?
• Explain the construction, working and uses of fuel cell?
• Discuss lead accumulator, explaining its discharging and recharging.