Hitunglah fraksi mol NaOH jika 4 gram NaOH dilarutkan dalam 10 gram air (Ar=Na=2,3 ,O=16 , H=1)​

Penjelasan:

diketahui

NaOH

gr = 4

Mr = 40

n = gr/Mr

n = 4/40

nt = 0,1

air

gr = 10

Mr = 18

n = gr/Mr

n = 10/18

np = 0,5

Xp = np/ (nt+np)

Xp = 0,5 / (0,1+0,5)

Xp = 0,5 / (0,6)

Xp = 0,83 -> fraksi mol air

Xt = 1-Xp

Xt = 1-0,83

Xt = 0,17 -> fraksi mol NaOH