c. 12 gram kalium klorida dalam 200 ml larutan d. 400 mg calsium sulfat dalam 500 ml larutan

[c]
KCl
Mr = 75
ek = 1
wt = 12 gram
V = 200 mL
N = ........................?

BE = Mr/ek
= 75/1
= 75

N = wt/BE x 1000/V
= 12/75 x 1000/200
= 0,8 normal

[d]
CaSO₄
Mr = 136
ek = 1
wt = 400 mg = 0,4 gram
V = 500 mL
N = ........................?

BE = Mr/ek
= 136/1
= 136

N = wt/BE x 1000/V
= 0,4/136 x 1000/500
= 0,006 normal