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q reaksi = -(q larutan +q kalorimeter)
q larutan
= massa x kalor jenis larutan x perubahan suhu
= 100 x kalor jenis larutan x 3
= 300 x kalor jenis larutan
q kalorimeter
= kapasitas kalor kalorimeter x perubahan suhu
= kapasitas kalor kalorimeter x 3
kalau kapasitas kalor diabaikan, maka q reaksi = - q larutan
Kalau reaksi berlangsung pada tekanan tetap, maka delta H = qreaksi