bargejailen3938 bargejailen3938
  • 02-10-2019
  • Chemistry
contestada

Calculate the pH of a solution created by placing 2.0 grams of yttrium hydroxide, Y(OH)3, in 2.0 L of H2O. Ksp for Y(OH)3 is 6.0x10-24.

Respuesta :

gbustamantegarcia054 gbustamantegarcia054
  • 07-10-2019

Answer:

pH = 8.314

Explanation:

  • Y(OH)3(s) ↔ Y+  +  3OH-

equil:   S               S         3S

∴ Ksp = [ Y+ ] * [ OH- ]³ = 6.0 E-24

⇒ 6.0 E-24 = ( S )*( 3S )³

⇒ 6.0 E-24 = 27S∧4

⇒ 2.22 E-25 = S∧4

⇒ ( 2.22 E-25 )∧(1/4) = S

⇒ S = 6.866 E-7 M

⇒ [ OH- ] = 3*S =2.06 E-6 M

⇒ pOH = - Log [ OH- ]

⇒ pOH = - Log ( 2.06 E-6 )

⇒ pOH = 5.686

∴ pH = 14 - pOH

⇒ pH = 8.314

Answer Link

Otras preguntas

What eats rabbit? and What does a fox eat?
PLease help!! Question 1 In "The Man to Send Rainclouds," what does the narrator explore? A) His aunt's religious beliefs B) The Spanish Civil War C)Teofilo's b
What does the arrow mean in a food chain?
Do you find that being able to choose your participants can alter the reliability of the study?
Anyone have a essay I can use.
Which of the following represents the general formula of a circle? y = ax2 + bx +c x2 + y2 = r2 Ax + By = C y = mx + b
The anti-black, anti-catholic, and anti-semitic organization that claimed over 3 million members by the mid-1920s was:
What is important information about S waves ?
What is the answer to the question in the picture
What do Borachio and Conrad agree to do in the book Much Ado? A. Trick Don Pedro into falling in love with Hero B. Help Don John make trouble fo