2K + Br2 ==> 2KBr
mols K = 2/atomic mass K = about 0.05
mols Br2 = 2/molar mass Br2 = about 0.012
Convert mols K to mols Br2. That's about 0.05 x (1 mol Br2/2 mols K) = about 0.05 x 1/2 = about 0.025. Do you have that many mols Br2? NO, so Br2 is the limiting reagent.
If 2.00 grams of potassium are allowed to react with 2.00 grams of bromine by the following equation, which reactant is the limiting reactant?
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1 answer