Ask Question
27 July, 05:15

Consider the following reaction. 2Fe2O3 - - > 4Fe + 3O2 deltaH = + 824.2KJ The formation of 42.0 g of O2 results in? 1) the absorption of 361 kJ of heat. 2) the absorption of 11500 kJ of heat. 3) the absorption of 1080 kJ of heat.

+1
Answers (1)
  1. 27 July, 07:52
    0
    If deltaH is positive, that means the reaction took heat from its environment (endothermic reaction).

    The molar mass of O2 is 32 g/mol.

    Therefore, 42g of O2 is equal to 1.3 moles O2.

    The equation assumes 3 moles of O2. That means, only 1.3/3 = 43% of the delta H in the equation was formed.

    824.2 kJ x 43% = 354 kJ. The closest answer is 1) the absorption of 361 kJ of heat.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Consider the following reaction. 2Fe2O3 - - > 4Fe + 3O2 deltaH = + 824.2KJ The formation of 42.0 g of O2 results in? 1) the absorption of ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers