Question

Ke dalam 100 gram larutan asam cuka 70% volume dimasukkan 145 mL air murni presentase volume larutan asam cuka sekarang

Answer 1

100 gr larutan cuka 70%
massa cuka = 0,7 x 100 = 70 gr
massa air = 100 - 70 = 30 gr
+ massa air = 145 ml (bj = 1 gr/ml) = 145 gr
total massa air = 175 gr

kadar cuka = 70 / (70 + 175) x 100% = 28,57%