Which of the following electrolytes is most effective in the coagulation of gold sol?
A. NaNO3
B. K4[Fe(CN)6]
C. Na3PO4
D. MgCl2
Answer:B
Which of the following electrolytes is most effective in the coagulation of gold sol?
A. NaNO3 B. K4[Fe(CN)6] C. Na3PO4 D. MgCl2