[mars_mhel]

HI! I don't know how to answer this question about stoichiometry! any ideas?

The potassium salt of benzoic acid, potassium benzoate, KC₇H₅O₂, can be made by the action of potassium permanganate on toluene, C₇H₈.
         C₇H₈ + 2 KMnO₄ --> KC₇H₅O₂ + 2MnO₂ + KOH + H₂O

If the yield of potassium benzoate cannot be realistically be expected to be more than 71%, what is the minimum number of grams of toluene needed to achieve this yield while producing 11.5 g of potassium benzoate?
           

[Mitch]

I don't know either. Did they give you any other chemical equations.

[mars_mhel]

nope...

[Donaldson Tan]

The potassium salt of benzoic acid, potassium benzoate, KC₇H₅O₂, can be made by the action of potassium permanganate on toluene, C₇H₈.
         C₇H₈ + 2 KMnO₄ --> 2MnO₂ + KOH + H₂O

This is a faulty equation: it is not balanced, and there is no organic product.

[mars_mhel]

woops.. sorry my bad... i changed it already