The values of van't Hoff factors for KCl, NaCl and `K_2SO_4` , respectively , are ___

Options

A. 2, 2 and 2
B. 2,2 and 3
C. 1, 1 and 2
D. 1, 1 and 1

Answer

B

Explanation

Both KCl and NaCl give two ions each whereas `K_(2)SO_(4)` gives 3 ions in solution
`NaCl_((aq)) to Na^(+)+Cl^(-) " "KCl_((aq)) to K^(+) +Cl^(-) " " K_(2)SO_(4(aq)) to 2K^(+) +SO_(4)^(2-)`