An acid sample of an unknown concentration is contained in a erlenmeyer flask. which technique below would be best suited to analytically determine the number of moles of hcl in the sample?

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,

At equivalence point

Moles of = Moles of

Considering:-

Moles of

Thus, in this way, moles of HCl can be determined.

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answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).