Calculate the pH of a ×7.610−8M aqueous solution of hydrochloric acid HCl.Round your answer to 2 decimal places.
Question
Calculate the pH of a ×7.610−8M aqueous solution of hydrochloric acid HCl.Round your answer to 2 decimal places.
Solution
To calculate the pH of a solution, you can use the formula pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution.
In this case, the concentration of HCl is given as 7.61 x 10^-8 M. Because HCl is a strong acid, it will dissociate completely in water to form H+ and Cl- ions. Therefore, the concentration of H+ ions will be the same as the initial concentration of HCl.
So, we can substitute [H+] = 7.61 x 10^-8 M into the pH formula:
pH = -log(7.61 x 10^-8)
Now, you can use a calculator to find the logarithm and solve the equation.
The result is approximately 7.12. So, the pH of the solution is 7.12.
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