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The discoloration of fluorescent yellow indicator is adsorbed by Ag+ adsorbed precipitation particles because of its negative ions.
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CrCl3·6H2O added into AgNO3, 2/3 chlorine was extracted, and forming a complex with bright green positive octahedral configuration. So its structural formula is ()
When EDTA directly titrates nonferrous metal ions, the end point will take on the color ( ).
Using phenolphthalein as the indicator, the solution of H3PO4 was neutralized at 10.00 mL with 0.1 mol/L NaOH solution ( ) mL.
Titrate the same volume of KMnO4 and NaOH at the same concentration of H2C2O4 standard solution. If the volume of solution consumed is the same at the stoichiometric point, it means that the concentration of NaOH solution is 5 times that of KMnO4 solution.
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