What is the solubility of a salt if 0.4g of it is obtained on evaporating 200(cm^{3}) of its saturated solution to dryness?
-
A.
0.08(gdm^{-3}) -
B.
2.00(gdm^{-3}) -
C.
8.00(gdm^{-3}) -
D.
80.00(gdm^{-3})
Correct Answer: Option B
Explanation
1000(cm^{3}) = 1(dm^{3})
200(cm^{3}) = 0.2(dm^{3})
⇒ 0.2(dm^{3}) contains 0.4g
hence, solubility of the salt which is the amount of the salt dissolvable in 1(dm^{3}) is
(frac{0.4g}{0.2dm^{3}} = 2.0gdm^{-3})