Chemistry Class

Question

A HCl is titrated with a NaOH solution of known concentration. How much volume of NaOH 0.132 M is necessary to neutralize 10.00 mL of HCl 0.200 M.

Answer 1

HCl + NaOH == NaCl + H2O ... balanced equation

Since the HCl and NaOH react in a 1:1 molar ratio, it is easy to use V1M1 = V2M2, but caution should be used if the molar ratio is not 1:1 in future problems.

V1 = x ml

M1 = 0.132 M

V2 = 10.00 ml

M2 = 0.200 M

(x ml)(0.132 M) = (10.00 ml)(0.200 M)

x = 15.15 mls = 15.2 mls (rounded to 3 significant figures)