Liberty University Online AcademyBIOL 103 A20 In Lab 3 Qualitative Analysis: Cations, you added K2CrO4 to a solution in step 3 of the reaction. What is the purpose of adding K2CrO4? Check all that apply. A)Separate Pb2+ from the rest of the ions B)Confirm the presence of Pb2+ in the solution C)Separate Ag+ from the rest of the ions D)Confirm the presence of Ag+ in the solution E)Separate Hg22+ from the rest of the ions F)Confirm the presence of Hg22+ in the solution

Answer: The purpose of adding K2Cr2O7 is confirmation test of the Pb2+ in the solution. The correct answer is (B) Confirm the presence of Pb2+ in the solution. PFA

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Liberty University Online AcademyBIOL 103 A20 In Lab 3 Qualitative Analysis: Cations, you added K2CrO4 to a solution in step 3 of the reaction

Biology May 21, 2021

Liberty University Online Academy BIOL 103 A20

In Lab 3 Qualitative Analysis: Cations, you added K₂CrO₄ to a solution in step 3 of the reaction. What is the purpose of adding K₂CrO₄? Check all that apply.

A)Separate Pb²⁺ from the rest of the ions

B)Confirm the presence of Pb²⁺ in the solution

C)Separate Ag⁺ from the rest of the ions

D)Confirm the presence of Ag⁺ in the solution

E)Separate Hg₂²⁺ from the rest of the ions

F)Confirm the presence of Hg₂²⁺ in the solution

Expert Solution

Answer:

The purpose of adding K₂Cr₂O₇ is confirmation test of the Pb²⁺ in the solution.

The correct answer is (B) Confirm the presence of Pb²⁺ in the solution.

PFA

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