Ksp of CaSO4⋅5H2O is 9 × 10-6, find the volume for 1 g of CaSO4 (M.wt. = 136).

Question

Ksp of CaSO4⋅5H2O is 9 × 10-6, find the volume for 1 g of CaSO4 (M.wt. = 136). (A) 2.45 litre (B) 5.1 litre (C) 4.52 litre (D) 3.2 litre

Tardigrade Admin · Accepted Answer

CaSO4 (s) leftharpoons undersetSCa2+(aq) + undersetSSO2-4(aq) Ks p=S2=9 × 10-6 S=3 × 10-3 mol L -1 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

Q. Ksp​ of CaSO4​⋅5H2​O is 9×10−6, find the volume for 1g of CaSO4​ (M.wt. = 136).

2.45 litre

5.1 litre

4.52 litre

3.2 litre

CaSO4​(s)⇌SCa2+​(aq)+SSO42−​​(aq) Ksp​=S2=9×10−6 S=3×10−3molL−1 Solubility in glitre−1 molecular mass ×S =136×3×10−3=408×10−3gL−1 408×10−3g of CaSO4​ present in 1 litre 1g of CaSO4​ present is 408×10−31​=2.45 litre

Q. $K_{s p}$ of $C a S O_{4} \cdot 5 H_{2} O$ is $9 \times 1 0^{- 6}$ , find the volume for $1 g$ of $C a S O_{4}$ (M.wt. = 136).