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In a hydrogen oxyge fuel cell, electrici...

In a hydrogen oxyge fuel cell, electricity is produced. In this process `H_2`(g) is oxided at anode and `O_2`(g) reduced at cathode
Given: Cathode `O_2(g)+2H_2O(l)+4e^(-)to4OH^(-)(aq)`
Anode `H_2(g)+2OH^(-)(aq)to2H_2O(l)+2e^(-)`
4.48 litre `H_2` at 1atm and 273 k oxidised in 9650 sec.
If current produced in fuel cell, is used for the deposition of `Cu^(+2)` in 1L,2M `CuSO_4`(aq) solution for 241.25 sec using Pt. electrode, the pH of solution after electrolysis is:

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
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In a hydrogen oxyge fuel cell, electricity is produced. In this process H_2 (g) is oxided at anode and O_2 (g) reduced at cathode Given: Cathode O_2(g)+2H_2O(l)+4e^(-)to4OH^(-)(aq) Anode H_2(g)+2OH^(-)(aq)to2H_2O(l)+2e^(-) 4.48 litre H_2 at 1atm and 273 k oxidised in 9650 sec. The current produced is (in amp):

In a hydrogen oxyge fuel cell, electricity is produced. In this process H_2 (g) is oxided at anode and O_2 (g) reduced at cathode Given: Cathode O_2(g)+2H_2O(l)+4e^(-)to4OH^(-)(aq) Anode H_2(g)+2OH^(-)(aq)to2H_2O(l)+2e^(-) 4.48 litre H_2 at 1atm and 273 k oxidised in 9650 sec. The mass of water produced is :

In a fuel cell H_(2) and O_(2) react to produce electricity. In the process H_(2) gas is oxidised at the anode and O_(2) is reduced at the cathode. If 6.72 litre of H_(2) at NTP reacts in 15 minute, what is the average current produced ? If the entire current is used for electro-deposition of Cu from Cu^(2+) , how many g of Cu are deposited ?

In a fuel cell H_(2) and O_(2) react to produce electricity. In the process H_(2) gas is oxidised at the anode and O_(2) is reduced at the cathode. If 6.72 litre of H_(2) at NTP reacts in 15 minute, what is the average current produced ? If the entire current is used for electro-deposition of Cu from Cu^(2+) , how many g of Cu are deposited ?

For the process, H_(2)O(l) to H_(2)O(g)

H_2(g) + 1/2 O_2(g) to H_2O (l), DeltaH = - 286 kJ 2H_2(g) + O_2(g) to 2H_2O (l), DeltaH = …kJ

To calculate K_(W) of water H_(2)O(l)+H_(2)O_(l)toH_(2)O^(+)(aq)+OH^(-)(aq)

In a fuel cell, hydrogen and oxygen react to produce electricity. In process, hydrogen gas is oxidized at the anode and oxygen at the cathode. If 67.2L of H_(2) at STP reacts in 15mi n , what is the average current produced ? If the entire current is used for electro - deposition of copper from copper (II) solution, how many grams of copper will be deposited ? Anode reaction : H_(2)=2overset(c-)(O)Hrarr2H_(2)O+2e^(-) Cathode reaction :O_(2)+2H_(2)O+2e^(-) rarr 4overset(c-)(O)H

Sort out the conjugate pairs of acid and bases in the following reactions : H_2O(l) + H_2O (l) hArr H_3O^(+) (aq) + OH^(-) (aq).

A 1 M solution of H_2SO_4 is electrolysed. Select correct statement in respect of products obtain at anode and cathode respectively: Given : 2SO_4^(2-) toS_2O_8^(2-)+2e^-,E^(@)=-2.01V H_2O(l)to2H^+(aq)+1//2O_2(g)+2e^-,E^(@)=-1.23V

NARENDRA AWASTHI ENGLISH-ELECTROCHEMISTRY-LEVEL-3
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  2. In a hydrogen oxyge fuel cell, electricity is produced. In this proces...

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  3. In a hydrogen oxyge fuel cell, electricity is produced. In this proces...

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  4. A saturated solution in AgX(K(sp)=3xx10^(-12)) and AgY(K(sp)=10^(-12)...

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  5. A saturated solution in AgX(K(sp)=3xx10^(-12)) and AgY(K(sp)=10^(-12)...

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  6. If the e.m.f of a galvanic cell is negative, it implies that:

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  7. Select correct statement(s) about electrolysis:

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  8. If the half-cell reaction A+e^(-)toA^(-) has a large negative reductio...

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  9. Which of the following statements is correct? If E(Cu^(2+)|Cu)^(@)=0.3...

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  10. The oxidation potential of hydrogen half-cell will be negative if:

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  11. which of the following arrangement will procedure oxygen at anode dur...

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  12. When an aqueous concentrated solution of lithium chloride is electroly...

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  13. Oxygen and hydrogen gas are produced at the anode and cathode during t...

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  14. During the purification of copper by electrolysis: (a)the anode used ...

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  15. When a lead storage battery is discharged:

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  16. Which of the following is characteristic of the cathode in a voltaic c...

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  17. In an electrochemical process, a salt bridge is used:

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  18. For a reaction in a galvanic cell the value of -/\G^(@) at certain tem...

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  19. Given that E(Fe^(2+)//Fe)^(.)=-0.44V,E(Fe^(3+)//Fe^(2+))^(@)=0.77V if...

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  20. which of the following statements are correct regarding to galvanic ce...

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