Question

a)Quantity of iron in tablet according to label....?

b)Mass of the iron tablet....0.009866g

c)Concentration of your KMnO4 solution ......0.009866M

Titration with MnO₄^{-...................1st...............2nd}

d)Volume of MnO₄^{-..........................23.7ml..........34.65ml}

e)Moles of MnO₄^{-...............................?...................?}

f)Average Moles of MnO₄^{-...................................?}

g)Molar ratio between MnO₄^-   and Fe(II).......1molMO4/5mol Fe(II)

h)Moles of Fe (II) in tablet....................?

i)Assuming the moles of Fe(II) in tablet are equivalent

to elemental Fe, moles of Fe in tablet..............?

j)Mass of Iron in tablet experimentally determined...........?

k)Percent mass of Iron in tablet......................................?

l)Show calculation of the determination of percent mass of iron.

m)Comment on the claim that the tablet contains the given amount of Iron.

Answer 1

a)Quantity of iron in tablet according to label....?

b)Mass of the iron tablet....0.009866g

c)Concentration of your KMnO4 solution ......0.009866M

Titration with MnO4-...................1st...............2nd

d)Volume of MnO4-..........................23.7ml..........34.65ml

e)Moles of MnO4-...............................?...................?

f)Average Moles of MnO4-...................................?

g)Molar ratio between MnO4-   and Fe(II).......1molMO4/5mol Fe(II)

h)Moles of Fe (II) in tablet....................?

i)Assuming the moles of Fe(II) in tablet are equivalent

to elemental Fe, moles of Fe in tablet..............?

j)Mass of Iron in tablet experimentally determined...........?

k)Percent mass of Iron in tablet......................................?

l)Show calculation of the determination of percent mass of iron.

m)Comment on the claim that the tablet contains the given amount of Iron.

e)Moles of MnO₄^-

1st Titration MnO₄^-

2nd Titration MnO₄^-

f)Average Moles of MnO₄^-

g)Molar ratio between MnO₄^-   and Fe(II).......1molMnO₄^-/5mol Fe(II)

h)Moles of Fe (II) in tablet

i)Assuming the moles of Fe(II) in tablet are equivalent to elemental Fe, moles of Fe in tablet..............?

j)Mass of Iron in tablet experimentally determined

b)Mass of the iron tablet....0.009866g

k)Percent mass of Iron in tablet

m)Comment on the claim that the tablet contains the given amount of Iron.

According to calculations, the experimentally determined percentage of Iron is bigger than the value of the label iron tablet.

It is suggested to review the initial value of the mass of iron (0.009866g) because it is equal to the value of the concentration of MnO₄^- (0.009866M), there may be an error in the values written here.