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Thermodynamics

Question
CBSEENCH11006064

Write the thermochemical equation for combustion of benzene indicating the sign of ∆H.

Solution
straight C subscript 6 straight H subscript 6 left parenthesis l right parenthesis space plus space 15 over 2 straight O subscript 2 left parenthesis straight g right parenthesis space rightwards arrow space space space 6 CO subscript 2 left parenthesis straight g right parenthesis space plus space 3 straight H subscript 2 straight O left parenthesis l right parenthesis
increment straight H space is space negative.