Respuesta :
Answer: The true statements are an acid with [tex][H_3O^+]=1.0\times 10^{-3}M[/tex] is stronger than an acid with [tex][H_3O^+]=1.0\times 10^{-8}M[/tex] and an acid with a pH of 4.53 is stronger than an acid with a pH of 6.56
Explanation:
pH is defined as the negative logarithm of hydrogen ion or hydronium ion concentration present in the solution.
[tex]pH=-\log[H_3O^+][/tex]
There are three types of solution: Acidic, basic and neutral
- If the solution has high hydrogen ion concentration, then the pH will be low and the solution will be acidic. The pH range of acidic solution is 0 to 6.9
- If the solution has low hydrogen ion concentration, then the pH will be high and the solution will be basic. The pH range of basic solution is 7.1 to 14
- The solution having pH equal to 7 is termed as neutral solution.
For the given options:
Option 1: The acid with [tex][H_3O^+]=1.0\times 10^{-3}M[/tex] is a strong acid because it is a higher concentration than /[tex][H_3O^+]=1.0\times 10^{-8}M[/tex]
Thus, this is a true statement.
Option 2: The acid with [tex][H_3O^+]=1.0\times 10^{-8}M[/tex] is a weak acid because it is a lower concentration than /[tex][H_3O^+]=1.0\times 10^{-3}M[/tex]
Thus, this is a false statement.
Option 3: The acid with pH = 4.53 is strong because the pH is low.
Thus, this is a true statement.
Option 4: The acid with pH = 11.71 is weak because the pH is high
Thus, this is a false statement.
