Using a mixed solution of 0.1 mol•L-1 H2SO4 and 0.5 mol•L-1 Na2SO4 at pH 6.51 as the supporting electrolyte, add 4 mL of supporting electrolyte to the reaction system
0.1 mol-L-1 H2SO4 and 0.5 mol-L-1 Na2SO4 mixing solution with pH of 6.51 to support electrolytes, 4 mL support electrolytes are added to the reaction system
The mixed solution of 0.1 mol · L-1 H2SO4 and 0.5 mol · L-1 Na2SO4 with pH of 6.51 was used as supporting electrolyte, and 4 ml supporting electrolyte was added into the reaction system<br>