Suppose electrochemical cell shown contained a tin electrode immersed in a stannous chloride solution in the left beaker and a platinum electrode immersed in a solution containing potassium dichromate and Cr3+ ions in the right beaker under standard conditions.Which of the following statements would be correct?Select one:a.The tin electrode will be anode and Cr3+ ions will be oxidised.b.The tin electrode will be cathode and Cr3+ ions will be oxidised.c.The tin electrode will be anode and dichromate ions will be reduced.d.The tin electrode will be cathode and dichromate ions will be reduced.

Simple chemical cells involve two electrodes. Which of the following statements is correct?Both electrodes must be carbonThe electrodes must be the same metalOne electrode must be carbonThe electrodes must be two different metals

Which of the following statements about galvanic cell is incorrect?anode is positiveoxidation occurs at the electrode with lower reduction potentialcathode is positive reduction occurs at cathode

Simple chemical cells involve two electrodes. Which of the following statements is correct?Both electrodes must be carbonThe electrodes must be two different metalsThe electrodes must be the same metalOne electrode must be carbon2To make a chemical cell, two metal electrodes are dipped in a salt or dilute acid solution and joined by a wire. What causes the electrical current?The flow of electrons from the more reactive metal to the less reactive metalThe formation of metal ions in the salt solutionThe loss of heat to the surroundingsThe flow of electrons from the less reactive metal to the more reactive metal3A zinc/carbon chemical cell (or battery) contains a paste of ammonium chloride. What is the function of this paste?To hold the electrodes in placeTo act as an electrolyteTo act as an electrodeTo hold the wire in place4What is the balanced equation of the overall reaction that takes place in a fuel cell?2H2O → 2H2 + O2H2 + O2 → H2O2H2 + O → 2H2O2H2 + O2 → 2H2O5Which of the following is a disadvantage of using hydrogen as a fuel?Fuel cells do not require rechargingFuel cells can be a range of sizesThe only waste product is waterHydrogen gas is highly flammable6Which of the following statements about hydrogen-oxygen fuel cells is not true?The only waste product is waterElectrical energy is produced from the oxidation of hydrogenHydrogen must be supplied constantlyAn acidic electrolyte is required 5/6 11-Apr-24 12:36

Which statement is correct for a voltaic but not for an electrolytic cell?A. An electrolyte is required.B. The anode is where oxidation occurs.C. Ions move in the electrolyte.D. Electrons flow from the negative electrode to the positive electrode

You are experimenting on electrolytic cell at your school laboratory. Which of the following is FALSE?Select one:a.Cations are oxidized.b.Anions are oxidized.c.Cations go to the cathode.d.Anions go to the anode.