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Calculate the ph after 10. 0 ml of 0. 40 m naoh is added to 20. 0 ml of 0. 50 m hc.

Sagot :

tushargupta0691

The pH is 13.31.

The smaller the pH value the more acidic, the larger the pH value the more basic.

The range is 0 to 14, with 7 representing neutrality. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per liters of a solution.

Molarity of NaOH = 0.40 M

Volume of NaOH = 10.0 mL

Molarity of HCL = 0.50 M

Volume of HCL = 20.0 ml

[tex][OH^-] = (M_2V_2 -M_1V_1)/(V_1+V_2)\\[/tex]

         [tex]= (0.50*20.0 - 0.40*10.0) / (20+10)[/tex]

         [tex]= (10 -4)/ 30\\[/tex]

         [tex]= 6/30[/tex]

         [tex]=0.2[/tex]

[tex]pOH = - log (OH ^-)[/tex]

[tex]pOH = - log (0.2)\\[/tex]

[tex]pOH = - ( - 0.698)[/tex]

[tex]pOH = 0.69[/tex]

[tex]pH + pOH = 14[/tex]

[tex]pH = 14 -0.69[/tex]

[tex]pH = 13.31[/tex]

Therefore, the pH after 10.0 mL of 0.40 M NaOH is 13.31.

Learn more about pH here:

https://brainly.com/question/22390063

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