In the electrochemical cell H_(2)(g) 1atm | 1H^(+)(lm) || Cu^(2+) (IM) |Cu(s) Which one of the following statements is true?
For a particle executing S.H.M, which of the following statements is not correct ?
From the following data at 25^(@)C {:("Reaction ",Delta_(r) H^(@) kJ//mol),((1)/(2)H_(2)(g) + (1)/(2)O_(2)(g) rarr OH (g),42),(H_(2)(g) + (1)/(2)O_(2)(g) rarr H_(2)O_(g),-242),(H_(2)(g) rarr 2H(g),436),(O_(2)(g) rarr 2O(g),495):} Which of the following statement(s) is/are correct: Statement (a): Delta_(r)H^(@) for the reaction H_(2)O(g) rarr 2H(g) + O(g) Statement (b): Delta_(r)H^(@) for the reaction OH(g) rarr H(g) + O(g) is Statement (c) : Enthalpy of formation of H(g) is -218 kJ/mol Statement (d): Enthalpy of formation of OH(g) is 42 kJ/mol
The emf of the following three galvanic cells are respresented by E_(1), E_(2) and E_(3) respectively. Which of the following is correct? (i) Zn//Zn^(2+) (1M)// //Cu^(2+)(1M)//Cu (ii) Zn//Zn^(2+) (0.1M)// //Cu^(2+)(1M)//Cu (iii) Zn//Zn^(2+)(1M)// //Cu^(2+)(0.1M)//Cu
Write the cell reaction taking plce in the cell CU_((s))|Cu_((aq))^(+2)||Ag _((aq))^(+) |Ag _((s))
For the cell Zn(s) | Zn^(2+) || Cu^(2+) | Cu(s) , the standard cell voltage E_("cell")^(0) is 1.10 V . When a cell using these reagents was prepared in the lab, the measured cell voltage was 0.97 V . One possible explanaiton of the observed voltage is
