Question

Hitung berapa ph 100 ml larutan mengandung 0,4 gram Naoh ( mr Naoh = 40 )

Answer 1

M NaOH = (gr/Mr)(1000/mL)
= (0,4/40)(1000/100)
M NaOH = 0,1

OH- = M NaOH x b
= 0,1 x 1
OH- = 10^-1
pOH = 1
pH =14-1 = 13