displaystyle N-2-g-3H-2-g-rightarrow 2NH-3-g- bigtriangleup -r-H-ominus -92-4 kJ mol-1- What is the standard enthalpy of formation of displaystyle NH-3- gas-

Question

displaystyle N-2-g-3H-2-g-rightarrow 2NH-3-g-    bigtriangleup -r-H-ominus -92-4 kJ mol-1- What is the standard enthalpy of formation of  displaystyle NH-3- gas-

Toppr Admin · Accepted Answer

When 1 mole of ammonia is formed from its elements, the enthalpy change is known as the enthalpy of formation. It is equal to one half the value of the enthalpy change associated with formation of 2 moles of ammonia.
Hence, the enthalpy of formation of ammonia is $\frac{92.2}{2} = - 46.1$ kJ/mol.

N2(g)+3H2(g)→2NH3(g): △rH⊖=−92.4 kJ mol−1What is the standard enthalpy of formation of NH3 gas?

When 1 mole of ammonia is formed from its elements, the enthalpy change is known as the enthalpy of formation. It is equal to one half the value of the enthalpy change associated with formation of 2 moles of ammonia.Hence, the enthalpy of formation of ammonia is 92.22=−46.1 kJ/mol.

$N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g) : △_{r} H^{⊖} = - 92.4 k J m o l^{- 1}$
What is the standard enthalpy of formation of $N H_{3}$ gas?

When 1 mole of ammonia is formed from its elements, the enthalpy change is known as the enthalpy of formation. It is equal to one half the value of the enthalpy change associated with formation of 2 moles of ammonia.
Hence, the enthalpy of formation of ammonia is $\frac{92.2}{2} = - 46.1$ kJ/mol.