Which of the following compounds corresponds to vant Hoff factor (i) to be equal to 2 for dilute solution?

Question

Which of the following compounds corresponds to vant Hoff factor (i) to be equal to 2 for dilute solution? (A)  K2SO4  (B)  NaHSO4  (C) Sugar (D)  MgSO4

Tardigrade Admin · Accepted Answer

i=2 means two ions are present in the solution K2SO4 xrightarrow underbrace2K++SO42-3 textions NaHSO4 xrightarrow underbraceNa++H++SO42-3 textions textSugar xrightarrow[] textNo textions textMgS textO4 xrightarrow underbraceMg2++SO42- text2 textions Thus, vant Hoff factor is 2 for dilute solution of textMgS textO text4 text.

Q. Which of the following compounds corresponds to vant Hoff factor $(i)$ to be equal to 2 for dilute solution?

$K_{2} S O_{4}$

$N a H S O_{4}$

Sugar

$M g S O_{4}$

$i = 2$ means two ions are present in the solution
$K_{2} S O_{4} 3 ions 2 K^{+} + S O_{4}^{2 -}$
$N a H S O_{4} 3 ions N a^{+} + H^{+} + S O_{4}^{2 -}$
$Sugar No ions$
$MgS O_{4} 2 ions M g^{2 +} + S O_{4}^{2 -}$
Thus, vant Hoff factor is 2 for dilute solution of
$MgS O_{4} .$

Q. Which of the following compounds corresponds to vant Hoff factor (i) to be equal to 2 for dilute solution?

K2​SO4​

NaHSO4​