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suppose that for the preparation of the stuck solution of borax, the solid borax

ID: 592753 • Letter: S

Question

suppose that for the preparation of the stuck solution of borax, the solid borax reagent is contaminated with a water-soluble substance that does not react with hydrochloric acid and does not have an ion common with borax. how will the contamination affect the calculated solubility product of borax according to the experimental procedure.

side note: *there have been multiple conflicting answers posted on Chegg, which one (if any) is correct?!*

ab 18 Thermodynamics of the Dissolution of Borax Post-Lab Questions 1. Suppose that for the preparation of the stock solution of borax, the solid borax reagent iS contaminated with a water-soluble substance that does not react with hydrochloric not have an ion in common with borax. How will this contamination affect the calcu acid and does 2. In the analysis of the B40s(0H)- concentration in one of the 5-mL borax samples, supp the bromocresol green endpoint was surpassed. How does this affect the reported so product of borax at that temperature? Explain. 18-8

Explanation / Answer

1. Given that stock solution is preparing by using Borax as reagent,which is contaminated. Also the Borax reagent is contaminated with a water-soluble substance i.e.  borax would cause a diluted solution. Hence it  require more hydrochloric acid to the titration. Thus the addition of this more HCl may cause the solubility product to be more because of increase in molar solubility. Hence this contamination causes increase in solubility product of borax.