Calculate the molar solubility of FeCO3. How many grams of FeCO3 are present in 15.0 L of a saturated FeCO3 solution?
Solution 98P :
Volume of saturated FeCO3 solution = 15.0 L
Grams of FeCO3 present in solution(Molar solubility) = ?
FeCO3 dissociates as :
FeCO3(s) → Fe2+ (aq) + CO32- (aq)
So, Ksp will be :
Ksp =  
To solve this problem, we need the solubility product, i.e Ksp for FeCO3. Assuming that the solution is at ambient temperature (25 oC), the value of the Ksp as 3.1310-11
Now, Let’s consider ‘x’ =  and 
Therefore, Ksp = x²
(3.1310-11) = x²
= 5.59410-6 M
Hence,  and  = 5.59410-6 M . i.e Concentration of saturated solution of FeCO3 = 5.59410-6 M.
Textbook: Introductory Chemistry
Author: Nivaldo J Tro
Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Since the solution to 98P from 15 chapter was answered, more than 258 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 98P from chapter: 15 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. This full solution covers the following key subjects: feco, Present, grams, Molar, calculate. This expansive textbook survival guide covers 19 chapters, and 2045 solutions. The answer to “Calculate the molar solubility of FeCO3. How many grams of FeCO3 are present in 15.0 L of a saturated FeCO3 solution?” is broken down into a number of easy to follow steps, and 21 words.