I think the answers are A, C, A.
It is important in gravimetric analysis to add an excess amount of precipitating ions to a solution containing an analyte because it helps to determine the mass of the analyte.
<h3>What is Gravimetric analysis?</h3>
This is a method which is used in the determination of the quantitative determination of the ion being analyzed(analyte) based on its mass.
Adding an excess amount of precipitating ions to a solution containing an analyte will make it easier for the mass of an analyte to be determined.
It is also important for the precipitate to be a pure substance with a definite and known composition which therefore makes it the most appropriate reason.
Read more about Gravimetric analysis here brainly.com/question/6163057
#SPJ1
Hello!
The ions that are present in solution are Ni⁺²(aq) and Cl⁻(aq)
Why?
When an ionic substance like Nickel Chloride (NiCl₂) dissolves in water, it dissociates into the individual ions that form the substance. Water molecules surround then the individual ions in a process called solvation.
It can be represented in the following chemical equation:
NiCl₂(s) → Ni⁺²(aq) + 2Cl⁻(aq)
Have a nice day!
