Energy required to dissociate 4 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25°C. The bond energy of H - H bond will be

Question

Energy required to dissociate 4 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25°C. The bond energy of H - H bond will be (A) 104 kcal (B) 10.4 kcal (C) 1040 kcal (D) 1.04 kcal

Tardigrade Admin · Accepted Answer

Bond energy=(208/4)×2=104 kcal

Q. Energy required to dissociate $4 g$ of gaseous hydrogen into free gaseous atoms is $208 k c a l$ at $2 5^{\circ} C$ . The bond energy of $H - H$ bond will be

$104 k c a l$

$10.4 k c a l$

$1040 k c a l$

$1.04 k c a l$

Bond energy $= \frac{208}{4} \times 2 = 104 k c a l$

Q. Energy required to dissociate 4g of gaseous hydrogen into free gaseous atoms is 208kcal at 25∘C. The bond energy of H−H bond will be

104kcal

10.4kcal

1040kcal

1.04kcal