The pH of an HCl solution is found to be 1.74. Therefore the [H3O+] is:
pH = -log(H^+)
how do I do this on my calculator it keeps saying error
To find the [H3O+] (hydronium ion concentration) in an HCl solution with a given pH, you can use the formula:
[H3O+] = 10^(-pH)
In this case, the pH is given as 1.74. So, plug the value into the formula:
[H3O+] = 10^(-1.74)
To calculate this, you need to use the logarithmic function on a calculator or a scientific calculator.
Taking the antilogarithm of -1.74, you get:
[H3O+] = 0.02154
Therefore, the [H3O+] in the HCl solution is approximately 0.02154 M.