Question

Compute the pH of the solution during the course of titration of 100 cm3 of 0.1 M HCl with a solution of NaOH having equal concentration and draw the titration curve.  

26 Apr 2023
Answer :
Word Count : 840

To calculate the pH of the solution during the titration of 100 cm³ of 0.1 M HCl with a solution of NaOH of equal concentration, we need to know the balanced chemical equation for the reaction that takes place during the titration. The balanced equation is:

HCl + NaOH → NaCl + H2O

This reaction shows that HCl reacts with NaOH to form NaCl (sodium chloride) and water (H2O). Since the reaction is a neutralization reaction, the amount of NaOH added during the titration can be used to determine the amount of HCl present in the original solution.

In the initial stage of the titration, only HCl is present in the solution, and the pH of the solution is determined by the concentration of H+ ions in the solution. Since HCl is a strong acid, it completely dissociates in water to form H+ ions and Cl- ions. Therefore, the concentration of H+ ions in the solution is equal to the concentration of HCl in the solution.

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