For strong and weak acids with the same amount of substance, how can pH judge strong and weak acids with the same concentration, and how can pH judge strong and weak acids with the same pH

For strong and weak acids with the same amount of substance, how can pH judge strong and weak acids with the same concentration, and how can pH judge strong and weak acids with the same pH

When the concentration is the same, the pH of strong acid is low; when the pH is the same, the concentration of weak acid is high!

Why do weak acids react with metals to release more hydrogen than strong acids react with metals

You don't have enough conditions, such as concentration, volume of solution, excess of metal, Ph. how can you make a conclusion? I can only say: two acids with the same pH and volume react with excess of the same metal, and weak acid generates more hydrogen. Because there are very few hydrogen ions ionized by weak acid at the same concentration, to achieve the same pH, the concentration of weak acid is much higher than that of strong acid, and because it is the same volume, More weak acids, more hydrogen

With the same C (acid) and the same volume, why is the monobasic strong acid C (H +) larger than the monobasic weak acid C (H +) and the amount of hydrogen produced by the reaction with metal the same?
I'm preparing for a new lesson. I don't understand it here. I'd like to analyze it carefully

C (H +) is the concentration of H + in the solution at a certain time. The ionization degree of strong acid is large, of course, H + is large
But the amount of total H + ionized is the same no matter how strong or weak, so the amount of H2 is the same