Calculate the amount of 0.1 M base needed to neutralize 10,000 liters of pH 6.0 water.
The base is Sodium Hydroxide (NaOH) Please show work!

Respuesta :

Answer:

0.1 liters of NaOH.

Explanation:

When the acid solution is neutralized we have:

[tex] n_{a} = n_{b} [/tex]

[tex] C_{a}V_{a} = C_{b}V_{b} [/tex]

Where:

[tex]n_{a}[/tex]: is the number of moles of the acid

[tex]n_{b}[/tex]: is the number of moles of the base

[tex]C_{a}[/tex]: is the concentration of the acid

[tex]C_{b}[/tex]: is the concentration of the base = 0.1 M

[tex]V_{a}[/tex]: is the volume of the acid = 10000 L

[tex]V_{b}[/tex]: is the volume of the base =?

The concentration of the acid can be calculated from the pH:

[tex] pH = -log([H^{+}]) [/tex]

[tex] [H^{+}] = 10^{-pH} = 10^{-6} M [/tex]

Now, we can find the volume of the base:

[tex] V_{b} = \frac{C_{a}V_{a}}{C_{b}} = \frac{10^{-6} M*10000 L}{0.1 M} = 0.1 L [/tex]

Therefore, the amount of NaOH needed to neutralize the solution is 0.1 liters.

I hope it helps you!