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Perhatikan diagram siklus berikut :   Dari diagr...

Perhatikan diagram siklus berikut :

 

Dari diagram diatas , tentukan harga x !

Jawaban:

menentukan begin mathsize 14px style increment H end style:

begin mathsize 14px style increment H subscript 1 equals space 987 space kJ increment H subscript 2 equals minus sign 790 space kJ increment H subscript 3 double bond x space end style

menentukan nilai x :

begin mathsize 14px style panah space searah space jarum space jam space equals panah space berlawanan space jarum space jam increment H subscript 1 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals increment H subscript 2 plus increment H subscript 3 minus sign 987 kJ space space space space space space space space space space space space space space space space space space space space space space space equals minus sign 790 space kJ space plus space x x space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals minus sign 790 plus 987 x space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals plus 197 space kJ end style 

Jadi, nilai x adalah +197 kJ.

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