Answer :
Answer:
Titration
Explanation:
The best technique which can be used to determine the number of moles of the HCl in the sample is titration.
The given amount of HCl solution must be titrated with known concentration of the base like NaOH.
The volume of NaOH required must be noted also.
According to the reaction,
[tex]NaOH+HCl\rightarrow NaCl+H_2O[/tex]
At equivalence point
Moles of [tex]HCl[/tex] = Moles of [tex]NaOH[/tex]
Considering:-
Moles of [tex]HCl=Molarity_{NaOH}\times Volume_{NaOH}[/tex]
Thus, in this way, moles of HCl can be determined.
Titration technique below would be best suited to analytically determine the number of moles of HCl in the sample.
How we calculate moles from concentration?
If the concentration of any substance will be present in the form of molarity (M) then moles (n) will be calculated by using the below formula:
M = n/V, where
V = volume
To calculate the moles of an acid with unknown concentration, we have to titrate it with the base with known concentration and calculate the moles of acid and moles of that acid will be calculated by using the concentration and volume of base.
Let, NaOH be the base for HCl and reaction represented as:
HCl + NaOH → NaCl + H₂O
From the stoichiometry of the reaction it is clear that same moles of HCl & NaOH is present in the solution.
Moles of HCl = Molarity of NaOH × Volume of NaOH
Hence, we use the titration method.
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https://brainly.com/question/186765