67.
What is the log γ ± Value of aqueous solution of Na2SO4 of 0.001 molality at 250C? Where γ ± is means ionic activity coefficient and for water at 250C, the value of Debye-Huckel constant is 0.509.
A:
0.879
B:
-0.055
C:
- 0.003
D:
-0.905
The answer is:
B