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Karena konsentrasi dan volume reaktan sama, berarti reaktan habis bereaksi...
Untuk menentukan pH larutan, kita gunakan rumus hidrolisis...
[H+] = √Kw/ Kb . M garam
= √10^-14 / 1 x 10^-5 . 0,2M/2
= √10^-9 x 10^-1
= √10^-10
=10^-5
pH = - log [H+] = - log 10^-5 = 5
Jadi, pH larutan adalah 5...