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M- Texas Woman University... x C Chegg study l Guided sol... X Ga e now to save a sareen shot a apicture Tr pling /biscm 3145131 ming-com My Assignment Resources 3/29/2017 11:55 PM 38.3/100 3/22/2017 08:28 PM Gradebook Assignment Information Attempts Score Print Calculator Periodic Table Available From: 3/3/2017 12:00 AM 9 of 2 Due Date: 3/29/2017 11:55 PM Map EA Sapling Learning Points Possible: Grade Category: Graded A generic salt, AB, has a molar mass of 347 g/mol and a solubility of8.70 g/L at 25 C. Description What is the Ksp of this salt at 25 "C? Policies: ABIs) FA A (aq)+ B (aq) You can check your answers. 100 Number You can view solutions when you complete or give Asp, 8.09 x 10-5 up on any que You can keep trying to answer each question until you get it right or give up. You lose 59% of the points available to each answer Previous Give Up & View Solution Try Again ONext 1Exit Expla in your question for each incorrect attempt at that Ka can be calculated from the molar concentrations of the two ions formed when a salt dissolves in water. In this case, the expression is o eTextbook Complete this table (where xrepresents the molar solubility) then express Ksp in terms of x. o Help with This Topic ABIs Bag, A Mag initial: excess OWeb Help & Videos change: -x o Technical support and Bug Reports final 67 4:26 PM Ask me anything 3/24/2017 R3

Explanation / Answer

First, find moles:

1 mol = 347 g/mol

so

mol = mass/MW = 8.7/347 = 0.0250720 mol per liter is th esolubility

recall that

[AB] = 0.0250720 M

so

[A+] = [AB] = 0.0250720

[B-] = [AB] = 0.0250720

then

Ksp = [A+][B-]

Ksp = (0.0250720)(0.0250720)

Ksp = 0.000628

Ksp = 6.28*10^-4

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