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Data nilai energi ikatan rata-rata diketahui sebagai berikut. C H 3 ​ B r ( g ) + B r 2 ​ ( g ) → C H 2 ​ B r 2 ​ ( g ) + H B r ( g ) Nilai entalpi reaksi di atas adalah......

Data nilai energi ikatan rata-rata diketahui sebagai berikut.

Nilai entalpi reaksi di atas adalah......

  1. plus 27 space k J space m o l to the power of negative 1 end exponent

  2. negative 27 space k J space m o l to the power of negative 1 end exponent

  3. plus 54 space k J space m o l to the power of negative 1 end exponent

  4. negative 54 space k J space m o l to the power of negative 1 end exponent

  5. plus 81 space k J space m o l to the power of negative 1 end exponent

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S. Lubis

Master Teacher

Mahasiswa/Alumni Universitas Sumatera Utara

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Pembahasan

P e r s a m a a n space r e a k s i colon space C H subscript 3 B r left parenthesis g right parenthesis space plus space B r subscript 2 left parenthesis g right parenthesis space space rightwards arrow space C H subscript 2 B r subscript 2 left parenthesis g right parenthesis space plus space H B r left parenthesis g right parenthesis

K a r e n a space m e n g g u n a k a n space d a t a space e n e r g i space i k a tan space r a t a space – space r a t a comma space m a k a  increment H equals sum increment H subscript r e a k tan end subscript – sum increment H subscript p r o d u k end subscript  space space space space space space equals space left parenthesis 3 left parenthesis C space – space H right parenthesis space plus space left parenthesis C space – space B r right parenthesis space plus space left parenthesis B r space – space B r right parenthesis right parenthesis space – space left parenthesis left parenthesis 2 space left parenthesis C space – space H right parenthesis space plus space left parenthesis 2 left parenthesis C space – space B r right parenthesis plus left parenthesis H space – space B r right parenthesis right parenthesis  space space space space space space equals space left parenthesis left parenthesis C space – space H right parenthesis space plus space left parenthesis B r space – space B r right parenthesis right parenthesis space – space left parenthesis left parenthesis C space – space B r right parenthesis space plus space left parenthesis H space – space B r right parenthesis right parenthesis  space space space space space space equals space 410 space plus space 193 space – space 267 space – space 36  space space space space space space equals negative 27 space k J divided by m o l

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Energi ikatan rata-rata N-Br, F-F, N-F dan Br-Br berturut-turut adalah 243, 159, 272, dan 193 kJ/ mol. Perubahan entalpi reaksi : 2NBr 3 (g) + 3F 2 (g) => 2NF 3 (g) + 3Br 2 (g) untuk 1 mol NF 3 ...

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