A cell diagram shown below contains of one litre of buffer solution of `HA(PK_a=4)` and NaA in both compartments. What is the cell e.m.f?

One litre of a buffer solution contains 0.1 M NH_(4)OH . The p^(kb) of base is 5.pH value of the solution is

One litre a butter solution containing 0.01 M NH_(4)Cl and 0.1 M NH_(4)OH having pk_(b) of 5 has Ph of

E_(Cu^(+2)//Cu)^(@)=0.34V, E_(Zn//Zn^(+2))^(@)=0.76V A cell formed by the conbination of Cu and Zn (a) when CuSO_(4) is added to Cu^(+2) compartment what is the effect on emf of cell (b) when NH_(3) is added to Cu^(+2) compartment what is the effect on emf of cell (c ) When ZnSO_(4) is added to Zn^(+2) compartment is the effect on emf of cell (d) When Zn^(+2) is diluted what is the effect on emf of cell ?

K_a of weak acid HA is 1.8 xx 10^(-4) . If the pH of a buffer solution made up of HA and NaA of total molarity is 0.29 having ph=4.4, what is the molarity of HA?

In the situation shown , the potential difference across the cell of smaller e.m.f is .

Define - terminal voltage of the cell? What is the e.m.f of a cell?

What is the e.m.f of the Bichromate cell ?

What is the e.m.f of the Bichromate cell ?