Question

Energy required to dissociate 4g of gaseous H2 into free gaseous atoms is 872 kj at 25 degree c. The bond energy of H-H bond will be

Answer 1

As the energy required to dissociate 4g of gaseous H₂ into free gaseous atoms is 872 kJ at 25 ⁰c.

$Number of moles of H₂, n= \frac{Given mass of the H_{2}}{Molar mass of the H_{2}}$  

$Number of moles of H₂, n= \frac{4}{2}$

$Number of moles of H₂, n=2$

So, for 2 mole of H₂, E= 872kJ

$For 1 mole ,bond energy of H-H will be =\frac{872}{2}= 436kJ$

Answer 2

Answer:

Explanation:25 degree celcius temperature is given to confuse us!!!!!