Question

which of the following process is not involved in the calculation of standard electrode potential of alkali metals? a. hydration energy. b. sublimation energy. c. electron gain enthalpy d. ionisation enthalpy​

Answer 1

Answer:

option. d

Explanation:

which of the following process is not involved in the calculation of standard electrode potential of alkali metals? a. hydration energy. b. sublimation energy. c. electron gain enthalpy d. ionisation enthalpy

Answer 2

Answer:

Electron gain enthalpy  [OPTION C]  is the process not involved in calculation of standard electrode potential .

Explanation:

we have to find the  process which is not used in the process of standard electrode potential of alkali metal,

STANDARD ELECTRODE POTENTIAL DEPENDS ON THE TOTAL ENTHALPY CHANGE OF A SYSTEM.

1). Metal atoms change into ions and they get dissolve in water or solution during this process hydration energy is used.

2). change from solid phase of a metal to vapor phase present in a solution; during this sublimation process is used.

3). Electron gain enthalpy is the energy required to add one electron to the atom to make it stable. In the case of alkali metals, alkali metals are ready to give one electron to get stable rather than gaining number of electrons,

Therefore, Electron gain enthalpy is NOT used.

4). Ionization enthalpy of any substance is the energy required to convert any metal atom in anion or cation .

During electrolysis, metal atom forms cation (M⁺). the energy required to form this cation is  ionization enthalpy​.

Therefore, ionization enthalpy​ is used .

Hence, option c is correct.