50 gram NaOH dilarutkan dalam air sehingga volume larutan 850 ml. Hitunglah kemolaran larutan!

Jawaban: 1.48 M

Penjelasan:

Dik :

Massa NaOH = 50gr

Volume larutan = 850ml = 0.85ltr

Mr NaOH = 40 gr/mol

Dit :

Kemolaran larutan/M. NaOH…?

Jawab

Rumus kemolaran (M) = n/v

n = mol

V = volume

Mol NaOH = massa / Mr

Mol NaOH = 50/40

Mol NaOH = 1.25 mol

Molar NaOH = mol/volume

M. NaOH = 1.25/0.85

M. NaOH = 1.48 M