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Consider three generic acids: HX , HY , and HZ . The number of H plus and X minus ions in solution is equal to the initial number of HX molecules added to the solution. One quarter of the HZ molecules form H plus and Z minus ions in solution. The other three quarters of the molecules remain as HZ in solution. One half of the HY molecules form H plus and Y minus ions in solution. The other half of the molecules remain as HY in solution. Arrange the acids according to strength.

Respuesta :

Answer:

Decreasing order of strength of the the acids :

[tex]HX>HY>HZ[/tex]

Explanation:

The strength of an acid is measured by their pH of aqueous solution.

[tex]pH=-\log[H^+][/tex]

[tex]pH\propto \frac{1}{[H^+]}[/tex]

  • Lower the pH more will be the hydrogen ions and stronger will be the acid.
  • Higher the pH less will be the hydrogen ions and weaker will be the acid.

Solution of HX , has equal number of hydrogen ions as a that of its initial molecules o HX.

[tex][H^+]_x=[HX][/tex]

Solution of HY , molecules of hydrogen ions are half of the molecules of HY.

[tex][H^+]_y=\frac{1}{2}[HY][/tex]

Solution of HZ , one quarter molecules of hydrogen ions and three quarter  of the molecules of HY.

[tex][H^+]_z=\frac{1}{4}[HZ][/tex]

[tex][H^+]_x>[H^+]_y>[H^+]_z[/tex]

This means that HX is strongest acid followed by HY and then HZ.

Decreasing order of strength of the the acids :

[tex]HX>HY>HZ[/tex]

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