An iron containing sample of mass 0.53 g is first treated with HCI(ag) to convert all iron to Fe* then titrated with dichromate solution and required 212.4 mL of 0.0031 M K,Cr,0, to reach the end point. What is the iron percent in the sample by mass?Fe"(aq) + Cr,O,- (ag) - Fe"(aq) + Cr"(aq) (unbalanced)O a. 21.02%O b. 52.53%Oc. 26.74%O d. 41.63%O e. 36.79%

The ratio of mass of particular atom to the total mass multiply by 100 is known as percent by mass.

An iron containing sample of mass 0.53 g is first treated with HCI(aq) to convert all iron to Fe* then titrated with dichromate solution and required 212.4 ml of 0.0031 M KCr,O, to reach the end point. What is the iron percent in the sample by mass? Fe"(aq) + Cr,O, (aq) - Fe"(aq) + Cr"(aq) (unbalanced) O a. 21.02% O b. 52.53% O c. 26.74% O d. 41.63% O e. 36.79%

An iron containing sample of mass 0.53 g is first treated with HCI(aq) to convert all iron to Fe* then titrated with dichromate solution and required 212.4 ml of 0.0031 M KCr,O, to reach the end point. What is the iron percent in the sample by mass? Fe"(aq) + Cr,O, (aq) - Fe"(aq) + Cr"(aq) (unbalanced) O a. 21.02% O b. 52.53% O c. 26.74% O d. 41.63% O e. 36.79%

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter4: Stoichiometry

Section: Chapter Questions

Problem 4.56PAE

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