Question

A. berapa massa NaOH yang terlarut dalam 5L larutan naoh 0,3 M?
b. 200 ml larutan NaOH 0,6 M
(Mr= 40)

Answer 1

A.
mol NaOH = MxV = 5x0.3 = 1.5mol
massa NaOH = 1.5 x 40 = 60 gram

b. 
mol NaOH = 0.6 x 0.2 = 0.12 mol
massa NaOH = 0.12 x 40 = 4.8 gram