The amount of manganese in steel is determined by changing it to permanganate io

Question

The amount of manganese in steel is determined by changing it to permanganate ion. The steel is first dissolved in nitric acid, producing Mn2+ ions. These ions are then oxidized to the deeply colored MnO4- ions by periodate ion (IO4-) in acid solution.

(a) Complete and balance an equation describing each of the above reactions. (Type your answer using the format CO2 for CO2, (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.)

Equation 1:

Mn(s) + 2H+(aq) + 34(aq) -------> 5Mn2+(aq) + 67(g) + 89(l)

Equation 2:

11(aq) + 12Mn2+(aq) + 1314(l) ------> 1516(aq) + 17MnO4-(aq) + 18H+(aq)

(b) Calculate E

Explanation / Answer

a) Equation 1 is

3Mn + 2NO3- + 8H+<===> 3Mn2+ + 2NO + 4H2O

and equation 2 is

2Mn2+ + 5IO4- + 3H2O <===> 2MnO4- + 5IO3-+ 6H+

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.