Home
Class 12
CHEMISTRY
The reduction potential of hydrogen half...

The reduction potential of hydrogen half - cell will be negative if -

A

`p_((H_(2)))="1 atm and "[H^(+)]=1.0M`

B

`p_((H_(2)))="2 atm and "[H^(+)]=1.0M`

C

`p_((H_(2)))="2 atm and "[H^(+)]=2.0M`

D

`p_((H_(2)))="1 atm and "[H^(+)]=2.0M`

Text Solution

Verified by Experts

The correct Answer is:
B
`H^(+)-erarr(1)/(2)H_(2)(g)`
`E=E^(0)-(0.059)/(1)log.(sqrt(p_(H_(2))))/([H^(+)])=0-(0.059)/(1)log.(sqrt2)/(1)=-ve.`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK (NEET)|23 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK (AIIMS)|10 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK (WBJEE)|14 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

  • ENVIRONMENTAL CHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 14(Answer the following questions)|6 Videos

Similar Questions

Explore conceptually related problems

The reduction potential of hydrogen half-cell with be negative if

The standard reduction potential of the half - cell: NO_(3)^(-)(aq)+2H^(+)+e rarr NO_(2)(g)+H_(2)O is 0.78V. (2) What will be the reduction potential of the half - cell in neutral solution? Assume all other species has unit concentration.

The standard reduction potential of the following reaction at 25^(@)C, is 0.78V, NO_(3)^(-)(aq)+2H^(+)(aq)+e rarr NO_(2)+H_(2)O. (i) If the concentration of H^(+) is 8(M), what will be the standard reduction potential of the half - cell ? (ii) What will be the reduction potential of the half - cell in neutral solution? Suppose all other constituents are at unit concentration.

4.5 mM Cr_(2)O_(7)^(2-) and 15mM Cr^(3+) is mixed to produce a solution of pH = 2.0. What will be the reduction potential of the half - cell? Given : For the change Cr_(2)O_(7)^(2-) rarr Cr^(3+) , the standard reduction potential is 1.33V .

Consider the half - cell : Pt|H_(2)"(1 atm)"|H_(2)SO_(4) . If the reduction potential of the half - cell at 25^(@)C be 0.3 V, then determine the pH of H_(2)SO_(4) solution in the half - cell.

For the half - cell Fe^(3+), Fe^(2+)|Pt , the concentration of Fe^(2+) and Fe^(3+) ions are 0.1 and 0.01 (M) respectively. Determine the reduction potential of the half - cell at 25^(@)C . Given : E_(Fe^(3+), Fe^(2+)|Pt)^(@)=+0.77V

The ionisation potential of hydrogen is ______.

Calculate the reduction potential of the following half - cells at 25^(@)C , (2) PT|Cl_(2)("5 atm")|HCl("0.15 M") Given : E_((1)/(2)Cl_(2)|Cl^(-))^(@)=+1.36V

Calculate the reduction potential of the following half - cells at 25^(@)C , (1) Pt|H_(2)("1.5 atm")|HCl"(0.01 M)" Given : E_((1)/(2)Cl_(2)|Cl^(-))^(@)=+1.36V

At 25^(@)C , the reduction potential of Cu^(2+)|Cu half - cell is 0.28V. If E^(@) of Cu^(2)|Cu half-cell is +0.34V , find the molar concentration of Cu^(2+) ion in the half - cell.