The ionisation enthalpy of sodium is 5.14 eV. How many k cal of energy is required to ionise all atoms present in one gram of gaseous Na atoms?

The ionisation enthalpy of sodium is 5.14 eV. How many k cal of energy

1.	The ionisation enthalpy of sodium is 5.14 eV. How many k cal of energy is required to ionise all atoms present in one gram of gaseous Na atoms?
Answer» Solution :1e V ATOM`""^(-1)` = 23 k CAL `mol."^(-1)` Energy required to ionise all atoms of 23 GRAMS (one mole ) of gaseous Na atoms `= 23 XX 5.14 k cal ` Energy required for ionisation of all atoms present in one gram of gaseous Na atom `= (23 xx 5.14)/(23)` `=5.14` k cal .