The EV(M2+/M) value for copper is positive (+0.34V). What is possiblereason for this? (Hint: consider its high ∆aHV and low ∆hydHV)
Question
The EV(M2+/M) value for copper is positive (+0.34V). What is possible reason for this?
(Hint: consider its high ∆aHV and low ∆hydHV)
Solution
The EV(M2+/M) value for copper is positive (+0.34V) which indicates that copper is more likely to be reduced than oxidized. This is due to its high ∆aHV (enthalpy of atomization) and low ∆hydHV (enthalpy of hydration).
-
High ∆aHV: The enthalpy of atomization is the energy required to convert a substance from its normal state into atoms. Copper has a high ∆aHV, which means it requires a lot of energy to be atomized. This makes it less likely to be oxidized (lose electrons), and more likely to be reduced (gain electrons).
-
Low ∆hydHV: The enthalpy of hydration is the energy released when a substance is dissolved in water. Copper has a low ∆hydHV, which means it releases less energy when it is hydrated. This also makes it less likely to be oxidized, and more likely to be reduced.
Therefore, the positive EV(M2+/M) value for copper is due to its high ∆aHV and low ∆hydHV, which make it more likely to be reduced than oxidized.
Similar Questions
The EV(M2+/M) value for copper is positive (+0.34V). What is possiblereason for this? (Hint: consider its high ∆aHV and low ∆hydHV)
Among the transition metals of 3d series, the one that has highest negative (M2+M/) standard electrode potential isTiCuMnZn
2Cu+ (aq) → Cu (s) + Cu+ (aq) 2Cu+ (𝑎𝑞) → Cu (𝑠) + Cu+ (𝑎𝑞) is +0.36 V at 298 K. The equilibrium constant of the reaction is
At 298K, the EMF of the cell: Mg(s) |Mg2+(Q)||Ag+(0.01)|Ag(s)is 3.022V. Calculate the value ‘Q’.(Given: EoMg2+/Mg = -2.37V and EoAg+/Ag = 0.80V)
Light of energy 2.0 eV falls on a metal of work function 1.4 eV. The stopping potential is
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.