Question

38.55 kJ of heat is absobed when 6.0 g of O₂ react with CIF according to the reaction, 2CIF (g) + O₂ (g) → Cl₂O (g) + OF₂ (g) What is the standard enthalpy of the reaction? (ΔH° = +205.6 kJ)

Answer 1

Therefore the standard enthalpy of the reaction is  =205.6 KJ

Explanation:

Weight of O₂ =16 gram

6.0 g of O₂  react with 1 mole CIF is absorbed  heat 38.55 KJ

1    gm of O₂  react with 1 mole CIF is absorbed  heat (38.55÷6) KJ

16 gm of O₂  react with 1 mole CIF is absorbed  heat (6.425×16)KJ

16 gm of O₂  react with 2 mole CIF is absorbed  heat (102.8×2) KJ

                                                                                        =205.6 KJ

Therefore the standard enthalpy of the reaction is  =205.6 KJ

Answer 2

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ΔH° = +205.6 kJ