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Hydrogen - oxygen fuel cells are used in...

Hydrogen - oxygen fuel cells are used in space prograins to supply

A

Power

B

drinking water

C

oxygen

D

Both (1) and (2)

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The correct Answer is:
D
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hydrogen-oxygen fuel cell may have an acidic or alkaline electrolyte. The half-cell reactions are To maximize the power per unit mass of an electrochemical cell, the electronic and electrolytic resistances of the cell must be minimized. Since fused salts have lower electrolytic resistances that aqueous solutions, high-temperature electrochemical cells are of special interest for practical applications. High temperature also allow the use of liquid metal electrode, which make possible higher current densities than solid electrodes For a Hydrogen-Oxygen fuel cell if DeltaH_(f)^(@)=(H_2O, l) = – 285 kJ //" mole" , then what will be its thermodynamic efficiency under standard conditions

hydrogen-oxygen fuel cell may have an acidic or alkaline electrolyte. The half-cell reactions are To maximize the power per unit mass of an electrochemical cell, the electronic and electrolytic resistances of the cell must be minimized. Since fused salts have lower electrolytic resistances that aqueous solutions, high-temperature electrochemical cells are of special interest for practical applications. High temperature also allow the use of liquid metal electrode, which make possible higher current densities than solid electrodes If 560 mL of H_2 gas at STP is fed into and is consumed by the fuel cell in 10 minutes, then what is the current output of the fuel cell?

hydrogen-oxygen fuel cell may have an acidic or alkaline electrolyte. The half-cell reactions are To maximize the power per unit mass of an electrochemical cell, the electronic and electrolytic resistances of the cell must be minimized. Since fused salts have lower electrolytic resistances that aqueous solutions, high-temperature electrochemical cells are of special interest for practical applications. High temperature also allow the use of liquid metal electrode, which make possible higher current densities than solid electrodes How many grams of water is produced in the cell if 2 Faradays of charge is derived from the fuel cells

In a hydrogen - oxygen fuel cell, combustion of hydrogen occurs to

Discuss the working of hydrogen – oxygen fuel cell. What are the advantages of using this fuel cell?

Hydrogen joins oxygen at the end of

How is a fuel cell represented ?

In a fuel cell, combustion of hydrogen occurs to

Large empty spaces present in a cell are-

AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
  1. The relationship between standard reduction potential of a cell and eq...

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  2. For a spontaneous reaction the DeltaG , equilibrium constant (K) and E...

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  3. For the reaction Pt// H2 (1 atm) // H^(+) (aq) // // Cl^(-) (aq) // Ag...

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  4. The relationship between free energy and electrode potential is

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  5. When an electric cell is charged, then

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  6. When lead storage battery is discharged

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  7. When lead storage battery is charged

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  8. During the charging of lead storage battery, the reaction occuring at ...

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  9. With respect to fuel cell prepared from H2 and O2 gases, the false sta...

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  10. Hydrogen - oxygen fuel cells are used in space prograins to supply

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  11. In a hydrogen - oxygen fuel cell, combustion of hydrogen occurs to

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  12. Which of the following reactions is used to make a fuel cell ?

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  13. Corrosion is basically a/an

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  14. In which of the following will the corrosion of iron be most rapid ?

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  15. Which of the following metals acts as a sacrificial anode for iron art...

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  16. The composition of rust is

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  17. Zinc is used to protect corrosion of iron because

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  18. The Zn acts as sacrificial or cathodic protection to prevent rusting o...

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  19. The corrosion of iron object is favoured by

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  20. Galvanization includes plating iron with

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