contestada

Which of these statements is/are true regarding a 1.0 M solution of a strong acid HA? (a) [A−] > [H+] true false (b) The pH is 0.0. true false (c) [H+] = 1.0 M true false (d) [HA] = 1.0 M true false

Respuesta :

Answer:

(a) false, (b) true, (c) true and (d) false

Explanation:

HA is a strong acid. Hence it dissociates completely to produce equal amount of [tex]H^{+}[/tex] and [tex]A^{-}[/tex] as follows:

                                  [tex]HA\rightarrow H^{+}+A^{-}[/tex]

Hence no HA will be left in solution.

[tex]pH=-log[H^{+}][/tex] , where [tex][H^{+}][/tex] represents concentration of [tex]H^{+}[/tex] in molarity

Here, [tex][H^{+}]=1.0M[/tex]

So, [tex]pH=-log(1.0)=0[/tex]

Hence, (a) false, (b) true, (c) true and (d) false

Otras preguntas