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Pertanyaan

Diketahui data energi ikatan sebagai berikut.


italic D subscript C bond C end subscript equals 348 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript C double bond O end subscript equals 799 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript C bond H end subscript equals 413 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript C bond O end subscript equals 358 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript Cl bond Cl end subscript equals 242 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript O bond H end subscript equals 463 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript H bond Cl end subscript equals 431 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript H bond H end subscript equals 436 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript C bond Cl end subscript equals 328 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript C double bond C end subscript equals 614 space kJ space mol to the power of negative sign 1 end exponent

italic D subscript O double bond O end subscript equals 146 space kJ space mol to the power of negative sign 1 end exponent


Tentukan increment H dari reaksi berikut.


b. C H subscript 3 bond C H subscript 2 bond C H subscript 2 bond C H O open parentheses italic g close parentheses and H subscript 2 open parentheses italic g close parentheses yields C H subscript 3 bond C H subscript 2 bond C H subscript 2 bond C H subscript 2 bond O H open parentheses italic g close parentheses

I. Yassa

Master Teacher

Mahasiswa/Alumni Universitas Negeri Surabaya

Jawaban terverifikasi

Jawaban

 increment H reaksi tersebut adalah negative sign 77 space kJ space mol to the power of negative sign 1 end exponent.

Pembahasan

Penentuan entalpi reaksi dengan energi ikat ditentukan berdasarkan selisih dari total energi ikatan sisi kiri dengan sisi kanan.


increment H double bond total space energi space ikatan space pada space sisi space kiri bond total space energi space ikatan space pada space sisi space k 8 anan equals left parenthesis left parenthesis 3 cross times 348 right parenthesis plus left parenthesis 8 cross times 413 right parenthesis plus left parenthesis 1 cross times 358 right parenthesis plus left parenthesis 1 cross times 799 right parenthesis right parenthesis minus sign left parenthesis left parenthesis 3 cross times 348 right parenthesis plus left parenthesis 9 cross times 413 right parenthesis plus left parenthesis 1 cross times 358 right parenthesis plus left parenthesis 1 cross times 463 right parenthesis equals 5.505 minus sign 5.582 equals minus sign 77 space kJ space mol to the power of negative sign 1 end exponent


Jadi, increment H reaksi tersebut adalah negative sign 77 space kJ space mol to the power of negative sign 1 end exponent.

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