The pH of the solution after dilution is 1.125.
HCl is hydrochloric acid. It is known by the name muriatic acid. It is among the strong acids. It has a pungent smell and is colorless. It has a molar mass of 36.4 g/mol. It's a common reagent used in pharmaceutical industries. It is also used in other industries such as textile, rubber, and metal.
The volume of HCl added to the solution = 3.0 ml
The molar concentration of HCl = 2.5 M
Let the molar concentration of the solution after dilution is x.
The volume of the diluted solution = 100 ml.
The molar concentration of the solution after dilution is,
[tex]M _{1} V _{2} = M_{2} V _{2} [/tex]
[tex]M_{2} = \frac{ M _{1} V _{2}}{V _{2} }[/tex]
[tex]M_{2} = \frac{2.5 \times 3}{100} [/tex]
[tex] = 0.075 \: M[/tex]
Thus, the molar concentration of the solution after dilution is 0.075 M.
The pH of the solution after the dilution is,
[tex][HCl] = [H ^{ + } ] = 0.075 \: M[/tex]
[tex]pH = - log [H ^{ + } ] [/tex]
[tex]pH = - log(0.075)[/tex]
[tex]pH = 1.125[/tex]
Therefore, the pH of the solution after dilution is 1.125.
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