Reaksi pembakaran lengkap metana (CH_(4)+2O_(2)arrow CO_(2)+H_(2)O) memiliki Delta Hf^circ =-890kJ/mol Jika 2 mol metana dibakar, energi yang dilepaskan adalah. a. +1780kJ b. -445kJ C. -890kJ d. -1780kJ

Question

Answer 1

The question is asking about the energy released when 2 moles of methane are burned. The combustion reaction of methane is given as

with

. This means that the formation of 1 mole of

and 2 moles of

from

and

releases 890 kJ of energy. Since 2 moles of methane are burned, the energy released will be

. Therefore, the correct answer is option d.

.

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