The formula for calculating the pH of a HCl-NaOH mixture is pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution.
To determine the concentration of hydrogen ions, you will need to know the initial concentrations of HCl and NaOH, as well as the volume of each solution added to the mixture. Then, you can use the equation [H+] = (moles of HCl)/(total volume of solution) to calculate the concentration of hydrogen ions.
Yes, you can use the Henderson-Hasselbalch equation, pH = pKa + log([A-]/[HA]), to calculate the pH of a HCl-NaOH mixture. However, you will need to know the pKa values of HCl and NaOH in order to use this equation.
The pH of a HCl-NaOH mixture is directly affected by the volumes of HCl and NaOH added. The more HCl is added, the lower the pH will be, while adding more NaOH will result in a higher pH. This is due to the fact that HCl is an acid and NaOH is a base, and their concentrations determine the concentration of hydrogen ions in the solution.
Yes, a pH meter can be used to measure the pH of a HCl-NaOH mixture. However, it is important to calibrate the pH meter with solutions of known pH values before measuring the mixture. This will ensure accurate results.