August 2018 1 52 Report
1. Aspirin ( obat sakit kepala) mengandung zat aktif
yaitu HC9H7O4. Tentukan pH
larutan apabila 2 tablet aspirin di larutkan dalam dalam 250 ml air. ( 1 tablet
aspirin = 0,32 gram HC9H7O4, Mr = 180, Ka = 2,75 x 10 -5)
2.
Hitunglah
pH dari campuran berikut

125 ml larutan CH3COOH 0,2 M dan 200 ml
larutan


Ca(CH3COO)2 0,1 M (Ka = 10

-5 )






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