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Based on the following reactions,
Q. Heat of formation of NO2 (in kcal) is ........
Correct answer is '4'. Can you explain this answer?
Verified Answer
Based on the following reactions,Q. Heat of formation of NO2 (in kcal)...
N2(g) + O2(g) → 2NO ----- (i) ∆rH° = 43 kcal
2NO(g) + O2(g) → 2NO2(g) -----(ii) ∆rH° = -35 kcal
Enthalpy of formation of NO2 means we need to have 1 mole of NO2 from its constituting elements.
We will have (i)/2 + (ii)/2
½ N2(g) + O2(g) → NO2(g) ∆fH° = 4 kcal
2NO(g) + O2(g) → 2NO2(g) -----(ii) ∆rH° = -35 kcal
Enthalpy of formation of NO2 means we need to have 1 mole of NO2 from its constituting elements.
We will have (i)/2 + (ii)/2
½ N2(g) + O2(g) → NO2(g) ∆fH° = 4 kcal
Most Upvoted Answer
Based on the following reactions,Q. Heat of formation of NO2 (in kcal)...
N2(g) + O2(g) → 2NO ----- (i) ∆rH° = 43 kcal
2NO(g) + O2(g) → 2NO2(g) -----(ii) ∆rH° = -35 kcal
Enthalpy of formation of NO2 means we need to have 1 mole of NO2 from its constituting elements.
We will have (i)/2 + (ii)/2
½ N2(g) + O2(g) → NO2(g) ∆fH° = 4 kcal
2NO(g) + O2(g) → 2NO2(g) -----(ii) ∆rH° = -35 kcal
Enthalpy of formation of NO2 means we need to have 1 mole of NO2 from its constituting elements.
We will have (i)/2 + (ii)/2
½ N2(g) + O2(g) → NO2(g) ∆fH° = 4 kcal
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Community Answer
Based on the following reactions,Q. Heat of formation of NO2 (in kcal)...
I think -4kcal is the answer .Add the 2 eqns we get
N2 + 2O2 ___ 2NO2. ∆H = -8k.cal. .this is for 2 moles of NO2
For 1 mole it would be -4K.Cal
N2 + 2O2 ___ 2NO2. ∆H = -8k.cal. .this is for 2 moles of NO2
For 1 mole it would be -4K.Cal
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Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer?.
Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Based on the following reactions,Q. Heat of formation of NO2 (in kcal) is ........Correct answer is '4'. Can you explain this answer?.
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