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Title: Find the concentration of the Sn2+(aq) in mol/L? Post by: polishprodigy93 on Apr 14, 2019 Experimental Design
The potassium dichromate solution is first standardized by titration with a sample of an acidified mol/L solution of the primary standard, iron(II) ammonium sulfate-6-water. The concentration of Cr2O72-(aq) was found to be 0.0085 mol/L. The standardized dichromate solution is then titrated against a 20.00 mL sample of the acidified tin(II) chloride solution. Evidence TITRATION OF TIN (II) SOLUTION (volume of K2Cr2O7(aq) required to react with 20.00 ml of Sn2+(aq)) Trial 1 2 3 4 Final buret reading(ml) 11.8 22.9 33.9 45.0 Initial buret reading (ml) 0.3 11.8 22.9 33.9 Find the concentration of the Sn2+(aq) in mol/L: (give your answer to 4 decimal places) Title: Re: Find the concentration of the Sn2+(aq) in mol/L? Post by: bio_man on Apr 14, 2019 Could you confirm the final chemical equation?
I'm getting: Cr2O72- + 6Fe3+ + 3Sn2+ ⇄ 6Fe2+ + 2Cr3+ + 7H2O + 3Sn4+ I'm doubting that it is right correct, please confirm and get back to me as soon as possible. Remember, if this is incorrect, everything else is wrong too, so it's a major stepping stone, and I don't want to mislead you with the wrong answer Title: Re: Find the concentration of the Sn2+(aq) in mol/L? Post by: polishprodigy93 on Apr 14, 2019 Yeah I believe that was my equation as well still waiting to see what I get on that. If you could help me with my granary question that would be great!
Title: Re: Find the concentration of the Sn2+(aq) in mol/L? Post by: bio_man on Apr 14, 2019 Content hidden
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