Question

4g of sulphur added in 10g of oxygen to form sulphur dioxide then what mass of so2 formed​

Answer 1

Answer:

S+O

2

⟶SO

2

The enthalpy of formation is calculated for 1 mole of formation of SO

2

.

One mole of SO

2

forms when one mole of S (32 grams) reacts.

For 0.5 g⟶ΔH=-4.6 kJ

ΔH is negative because it is exothermic, heat is released.

For 32 g⟶ΔH=x

⟹x=

0.5

32×(−4.6)

kJ=−294.4kJ

∴Enthalpy of formation of SO

2

is -294.4 kJ.