AIIMS2011ChemistryIonic Equilibrium
K_ s p of CaSO ₄ 5 H ₂ O is 9 10⁻⁶ , find the volume for 1 ~g of CaSO ₄ (M.wt. = 136).
Options
- A2.45 litre
- B5.1 litre
- C4.52 litre
- D3.2 litre
Correct answer
A. 2.45 litre
Step-by-step solution
aligned & CaSO _ 4(s) Ca ²⁺ _ (a q) + SO ₄ ²⁻ _ (a q) & S & K_ s p =S^2=9 10⁻⁶ & S=3 10⁻³ ~mol ~L ⁻¹ aligned Solubility in g litre ⁻¹= molecular mass S =136 3 10⁻³=408 10⁻³ ~g ~L ⁻¹ 408 10⁻³ ~g of CaSO ₄ present in 1 litre 1 ~g of CaSO ₄ present is 1 408 10⁻³ =2.45 litre