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Ca(OH)2 + HCl --> CaCl2 + H2O
mol Ca(OH)2= 4 gram/ (74 gram/mol)=0,05 mol
[Ca(OH)2]= 0,05 mol / 0,1 L= 0,5 M
[OH-]= 1 M
Prinsip penetralan asam basa :
V1N1=V2N2
25mL x 1 M = V2 x 0,2 M
V2= 125 mL.
Diketahui =
4 KOH dilarutkan dalam air hingga 100ml,
Pertama kita mencari Molaritasnya,
M =
M =
M = 0,54 M --> dibulatkan menjadi 0,5 M
Kemudian baru dititrasi,
V₁ . M₁ . a₁ = V₂ . M₂ . a₂
V₁ . 0,2 . 1 = 25 . 0,5 . 2
V₁ = 125ml