For the electro chemical cell `Pt(s)|underset(1 atm)(H_(2))(g)|H^(+)(1M)||Cu^(2+)(1M)|Cu(s)`, which one of the following statements are true ?

In the electrochemical cell H_(2)(g),"1 atm"|H^(+)(1M)"||"Cu^(2+)(1M)|Cu(s) , which one of the following statements is true?

In the electrochemical cell H_(2)(g) 1atm | 1H^(+)(lm) || Cu^(2+) (IM) |Cu(s) Which one of the following statements is true?

E_(1),E_(2) and E_(3) are the emfs of the following three galvanic cells respectively. (i) Zn_((s))|Zn^(2+)(0.1M)||Cu^(2+)(1M)|Cu_((s)) (ii) Zn_((s))|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu_((s)) (iii) Zn_((s))|Zn^(2+)(1M)||Cu^(2+)(0.1M)|Cu_((s)) Which one of the following is true?

E^(@) for the electrochemical cell Zn(s) | Zn^(2+)1M (aq)|| Cu^(2+) 1M(aq)| Cu (s) is 1.10 V at 25^(@) C. The equilibrium constant for the cell reaction, Zn(s)+Cu^(2+) (aq.) rarr Zn^(2+) (aq.) + Cu(s) will be: