Question
Download Solution PDFक्रैकिंग प्रतिक्रिया
C2H6 + H2 → 2CH4
पर गरम होती है
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFव्याख्या एवं गणना :
- बंध वियोजन ऊर्जा (अनुमानित मान):
- CH बंध inC 2 H 6 : 413 kcal/mol
- C 2 H 6 में CC बंध: 348 kcal/mol
- एचएच बॉन्ड: 436 किलोकैलोरी/मोल
- CH4 में CH बंध : 413 kcal/mol
- कुल बंधन वियोजन ऊर्जा:
- C 2 H 6 के लिए:
- 1 x 348 + 6 x 413 = 2826 किलोकैलोरी
- H2 के लिए:
- 1 x 436 = 436 किलोकैलोरी
- बंधन तोड़ने के लिए कुल ऊर्जा:
- 3262 किलोकैलोरी
- C 2 H 6 के लिए:
- कुल बंधन निर्माण ऊर्जा:
- 2 CH4 के लिए:
- 2 x (4 x 413) = 3304 किलोकैलोरी
- बंध बनाने के लिए कुल ऊर्जा:
- 3304 किलो कैलोरी
- 2 CH4 के लिए:
- प्रतिक्रिया के लिए ताप परिवर्तन ( \Delta H ):
- \(\Delta H = \text{Energy of bonds broken} - \text{Energy of bonds formed} \\ \Delta H = 3262 \text{ kcal} - 3304 \text{ kcal} = -42 \text{ kcal}\)
- कैलोरी में परिवर्तित करने पर:
- \(\Delta H = -42000 \text{ cal}\)
निष्कर्ष :
इस प्रतिक्रिया के लिए ताप परिवर्तन 41745 कैलोरी के निकटतम है।
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