The pH of solution A is 2.4​, while the pH of solution B is 9.4.
​(a) What are their​ hydrogen-ion concentrations?
​(b) How many times greater is the​ hydrogen-ion concentration of solution A than that of solution​ B?
​(c) By how many orders of magnitude do the concentrations​ differ?

Respuesta :

Answer:

Given:

The pH of solution A = 2.4

The pH of solution B = 9.4.

Solution:

The hydrogen ion  concentration is the amount of hydrogen ions present in the given solution usually expressed in terms of moles pere litre .

(A) hydrogen-ion concentrations of the solution.

[tex]H^+= 10^{-pH}[/tex]

Now,

The hydrogen ion concentration of the solution A

[tex]H^+= 10^{-2.4}[/tex]

[tex]H^+= 3.981\times 10^{-3}[/tex]

Similarly

hydrogen ion concentration of the solution B

[tex]H^+= 10^{-9.4}[/tex]

[tex]H^+= 3.981\times 10^{-10}[/tex]

​(b) The hydrogen ion concentration of solution A [tex]3.981\times 10^{-3}[/tex] is and the solution B is [tex]3.981\times 10^{-10}[/tex]

so we can conclude that the hydrogen ion concentration of solution A  is   [tex]10^ 7[/tex] times greater than solution B

(c) The solutions A and Solution B differ by 7 order of magnitude