1. Suppose that for the preparation of the stock solution of borax, the solid bo
ID: 977910 • Letter: 1
Question
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 hydrocholoric acid and does not have an ion in common with borax. How will this contamination affect the calculated solubility product of borax according to the Experimental procedure? 2. In the analysis of B4O5(OH)42- concentration in one of the 5-ml borax samples, suppose that the bromocresol green endpoint was surpassed. How does this affect the reported solubility product of borax at that temperature? Explain.
Explanation / Answer
1. Since no ions in common, it will not affect the solubility.
2. If endpoint was surpassed. higher than actual moles [B4O5 (OH)4]2- of will be reported. Hence solubility product will be too high.
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