AP EAMCET202018 Sep 2020Evening ShiftChemistrySome Basic Concepts of ChemistryActual
Calculate the density of an aqueous solution of KI, if its molarity and molality are (1.44 M ) and (1.5 ~mol ~kg ⁻¹ ) respectively.
Options
- A(2.20 ~g ~L ⁻¹ )
- B(2.50 ~g ~L ⁻¹ )
- C(1.20 ~g ~L ⁻¹ )
- D(0.50 ~g ~L ⁻¹ )
Correct answer
C. (1.20 ~g ~L ⁻¹ )
Step-by-step solution
We know, ( aligned m & = 1000 M 1000 d-M M_B d & = 1000 M+m M M_B 1000 m = & 1000 1.44+1.5 1.44 166 1000 1.5 & =1.1990=1.20 gL ⁻¹ m & = molality =1.5 ~mol ~kg ⁻¹ M & = molarity =1.44 ~mol ~L ⁻¹ M_B & = molar mass of KI & =166 ~g ~mol ⁻¹ d & = density of solution aligned )