this is a titration question 

answer the following questions using the information provided below 

1. The moles of Cr₂O₇^2-(aq) that reacted, expressed in scientific notation, is a.bc x 10^-dmol. The values of a, b, c and d are 

2. The concentration of Sn²⁺(aq), expressed in scientific notation, is a.bc x 10^-d mol/L. The values of a, b, c and d are 

It has been determined that fluoride can prevent the decay of tooth enamel. Historically, tin(II) fluoride was added to toothpaste to help combat tooth decay. Titration analysis was used to determine the concentration of tin(II) fluoride in a NMmple of toothpaste. A 10.0 mL sample of tin(II) fluoride solution was acidified and titrated with 0.0100 mol/L potassium dichromate solution as represented by the following equation.

3Sn2+(aq)+Cr2O2−7(aq)+14H+(aq)→3Sn4+(aq)+2Cr3+(aq)+7H2O(l)

The following data was collected during the four trials.

Trial I II III IV Final Volume (mL) 9.39 16.93 23.61 30.32 Initial Volume (mL) 2.85 9.39 16.93 23.61 Volume Used (mL)        

6 years ago

Answered By Leonardo F

Can you please post this question again with the complete chemical equation? I am not able to read it, and it gets difficult if I don't know which substance was used for the acidification. Thank y

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