Answer :

To calculate [H+] with a pH of 5.00, use the inverse log function on a calculator after entering the pH value as a negative number, which gives [H+] = 1 imes 10^-5 mol.dm^-3.

To calculate the hydrogen ion concentration ([H+]) when the pH is given as 5.00, one can use the formula pH = -log([H+]). To find [H+], we need to perform the inverse operation. The steps using a calculator are as follows:Enter the pH value 5.00.Change the sign to make it negative (use +/- key).Use the inverse log function, which is generally marked as 10^ or INV log.This will give you the [H+] concentration, which in this case is 1 imes 10^-5 M.

To determine the pH from the concentration of hydrogen ions, you can use the formula pH = -log[H3O+]. Substituting the given concentration into the formula, you get pH = -log(10-7) = 7.0, indicating a neutral solution.Thus, the concentration of hydrogen ions ([H+]) in a solution with pH of 5.00 is 1 imes 10^-5 mol.dm^-3.