Question

+3 poin


Berapa NaOH yang dibutuhkan untuk membuat larutan NaOH 0,5N sebanyak 100ML (Ar.Na =23,0=16,H=1)

Answer 1

Verified answer

NaOH ---> Na+ + OH- (ek = 1)
N = 0,5 normal
V = 100 mL
Mr = 40
wt = .........?

BE = Mr/ek
= 40/1
= 40

N = wt/BE x 1000/V
0,5 = wt/40 x 1000/100
0,5 = wt/0,25
wt = 0,5/0,25
wt = 2 gram