Hitunglah kemolalan larutan cuka yang mengandung 25% massa CH3COOH ( Ar H = 1 ; C = 12;0=16 )
anissa89
% = massa terlarut / massa larutan 25 / 100 = massa terlarut / massa larutan massa pelarut = 100 - 25 = 75 gr m = gr / Mr x 1000 / massa pelarut = 25/60 x 1000/75 = 25000 / 4500 = 5,56 m
25 / 100 = massa terlarut / massa larutan
massa pelarut = 100 - 25 = 75 gr
m = gr / Mr x 1000 / massa pelarut
= 25/60 x 1000/75
= 25000 / 4500
= 5,56 m