Limiting Reagent KMnO4 + AlCl3 + H2SO4 = Al2(SO4)3 + K2SO4 + MnSO4 + H2O + Cl2

Compound Coefficient Molar Mass Moles (g/mol) Weight (g)
KMnO4 6 158.033945
AlCl3 10 133.3405386
H2SO4 24 98.07848
Al2(SO4)3 5 342.1508772
K2SO4 3 174.2592
MnSO4 6 151.000645
H2O 24 18.01528
Cl2 15 70.906


To calculate the limiting reagent, enter an equation of a chemical reaction and press the Start button. The reactants and products, along with their coefficients will appear above.

Enter any known value for each reactant. The limiting reagent will be highlighted.

  • Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
  • Ionic charges are not yet supported and will be ignored.
  • Replace immutable groups in compounds to avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.
  • Compound states [like (s) (aq) or (g)] are not required.
  • You can use parenthesis () or brackets [].

How To Calculate Limiting Reagents

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