Equilibrium Question 839

Question: How many gms of CaC2O4 will dissolve in one litre of saturated solution. Ksp of CaC2O4 is 2.5×1019,mol2lit2

Options:

A) 0.0064 g

B) 0.0128 g

C) 0.0032 g

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

CaC2O4Ca2+,+C2O42;Ksp=S2

S=Ksp=2.5×109=5×105mol/litre solubility =5×105×128=0.0064g



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