To calculate the pH of a 0.1 M solution of nitric acid HNO3 , we need to first determine the concentration of hydrogen ions H+ in the solution. Since nitric acid is a strong acid, it will completely ionize in water, meaning that the concentration of H+ ions will be equal to the concentration of the nitric acid.In this case, the concentration of H+ ions is 0.1 M. To find the pH, we can use the pH formula:pH = -log10[H+]where [H+] is the concentration of hydrogen ions in moles per liter M .Plugging in the values, we get:pH = -log10 0.1 pH = - -1 pH = 1So, the pH of a 0.1 M solution of nitric acid HNO3 is 1, assuming complete ionization.