If a 0.075gram sample of a weak acid is dissolved in a 30-mL aqueous solution and then 10.0mL of the solution is used in the titration, how many grams of the sample are used for the titration?Show all work.

Respuesta :

Answer:

The mass of the sample  used for the titration is 0.025 g

Explanation:

Given;

mass of the sample = 0.075 g

volume of aqueous solution = 30 mL

volume of solution used in the titration = 10 mL

[tex]Concentration \ of \ the \ sample(\frac{g}{mL}) = \frac{mass(g)}{volume(mL)} = \frac{0.075g}{30mL} =2.5*10^{-3} \frac{g}{mL}[/tex]

If the volume of the solution used in titration is 10 mL, the mass of the sample used for the titration is;

M = CV;

Where;

m is the mass of the sample;

c is the concentration of the solution

v is the volume of the solution used

m = 2.5 x 10⁻³ x 10 = 2.5 x 10⁻² g = 0.025 g

Therefore, the mass of the sample  used for the titration is 0.025 g