Molar mass of Fe(OH)3 = 106.87 g/mol Molar mass of H2SO4 = 98.08 g/mol Volume of H2SO4 = 150 ml = 0.15 L Concentration of H2SO4 = 42% = 42 g/100 ml = 0.42 g/ml
Calculate the number of moles of Fe(OH)3: n(Fe(OH)3) = mass/molar mass = 200 g / 106.87 g/mol = 1.872 mol
Calculate the number of moles of H2SO4: n(H2SO4) = concentration x volume = 0.42 g/ml x 150 ml = 63 g
Calculate the number of moles of H2SO4: n(H2SO4) = mass/molar mass = 63 g / 98.08 g/mol = 0.641 mol
According to the balanced equation: Fe(OH)3 + H2SO4 -> Fe2(SO4)3 + 3H2O
From the equation, the mole ratio between Fe(OH)3 and H2SO4 is 1:1. So H2SO4 is in excess.
Calculate the mass of Fe2(SO4)3: m(Fe2(SO4)3) = n(H2SO4) x (molar mass(Fe2(SO4)3) / molar mass(H2SO4)) m(Fe2(SO4)3) = 0.641 mol x (399.88 g/mol / 98.08 g/mol) = 2.604 g
Therefore, the mass of Fe2(SO4)3 formed is 2.604 g and H2SO4 is in excess.
Molar mass of Fe(OH)3 = 106.87 g/mol
Molar mass of H2SO4 = 98.08 g/mol
Volume of H2SO4 = 150 ml = 0.15 L
Concentration of H2SO4 = 42% = 42 g/100 ml = 0.42 g/ml
Calculate the number of moles of Fe(OH)3:
n(Fe(OH)3) = mass/molar mass = 200 g / 106.87 g/mol = 1.872 mol
Calculate the number of moles of H2SO4:
n(H2SO4) = concentration x volume = 0.42 g/ml x 150 ml = 63 g
Calculate the number of moles of H2SO4:
n(H2SO4) = mass/molar mass = 63 g / 98.08 g/mol = 0.641 mol
According to the balanced equation:
Fe(OH)3 + H2SO4 -> Fe2(SO4)3 + 3H2O
From the equation, the mole ratio between Fe(OH)3 and H2SO4 is 1:1. So H2SO4 is in excess.
Calculate the mass of Fe2(SO4)3:
m(Fe2(SO4)3) = n(H2SO4) x (molar mass(Fe2(SO4)3) / molar mass(H2SO4))
m(Fe2(SO4)3) = 0.641 mol x (399.88 g/mol / 98.08 g/mol) = 2.604 g
Therefore, the mass of Fe2(SO4)3 formed is 2.604 g and H2SO4 is in excess.
Molecular equation:
Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O
Ionic equation:
Fe(OH)3 + 6H+ + 3SO4^2- -> Fe^3+ + 3SO4^2- + 6H2O