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50 mL campuran -> 50 g air (1 kg air = 1 L)
Q = m c AT
= 50 g x 4.2 J/g x 6
= 1260 J
NaOH + HCl -> NaCl + H2O
25 mmol , 25 mmol -> 25 mmol , 25 mmol
Berarti Qnya (1260 J) untuk 25 mmol H2O
Untuk 1 mol H2O
= 1 / [25 x 10^-3) * 1260 J
= 40 * 1260 J
= 50,400 J
Reaksi netralisasi AHnya negatif, berarti jawabannya -50,400 J (-50,4 kJ) [C]