a student performed a titration using 12.5. ml of naoh solution with 0.5 m hcl solution. if 50.0 ml of hcl was consumed during the titration, calculate the concentration of naoh.



Answer :

concentration of naoh is [tex]$0.25 \mathrm{M}$[/tex]

Explanation:

[tex]0.500 \frac{\mathrm{mol}}{\mathrm{L}} \mathrm{H}_2 \mathrm{SO}_4 \cdot 0.0125 \mathrm{~L}=0.00625 \mathrm{molH}_2 \mathrm{SO}_4[/tex]

Write a balanced equation for the reaction:

[tex]$\begin{aligned}& \mathrm{H}_2 \mathrm{SO}_4+2 \mathrm{NaOH} \rightarrow 2 \mathrm{H}_2 \mathrm{O}+\mathrm{Na}_2 \mathrm{SO}_4 \\& 1 \text { mol } \mathrm{H}_2 \mathrm{SO} 4 \text { neutralizes } 2 \mathrm{~mol} \mathrm{NaOH} \text {, so: } \\& 0.00625 \cdot 2=0.0125 \mathrm{~mol} \mathrm{NaOH} \\& 0.0125 \mathrm{~mol} \mathrm{NaO} \frac{\mathrm{H}}{0.05} L=0.25 \mathrm{MNaOH}\end{aligned}$[/tex]

concentration of naoh is 0.25 M

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

You can determine how much solute has been dissolved in the solvent by looking at the concentration of the solution. For instance, the concentration could be stated as 1 teaspoon of salt per 2 cups of water if you add 1 teaspoon to 2 cups of water.

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