Bradley has been given a sample of hcl and naoh. he knows that the naoh has a concentration of 1.0m, but the hcl concentration is unknown. which of these would be the best lab procedure to determine the strength of the acid?

Titration

Explanation:

Titration is a method to determine the concentration of an unknown solution by using a known concentration solution.

The known concentration solution (titrant) - NaOH 1.0 M is added through the burette to the flask containing unknown concentration solution (analyte) - HCl. For example, if the volume of NaOH used to neutralise 20 ml of HCl is 10 ml, the concentration of HCl is 0.5M. To elaborate,

Equation: NaOH + HCl → NaCl + H2O

moles of NaOH = Concentration (mol/L) x Volume (L) = 1.0 x 0.01 = 0.01 mol

moles of NaOH = moles of HCl = 0.01 mol

⟹ concentration of HCl = moles / Volume = 0.01/0.02 = 0.5M.

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