Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite. SiO2 +3C SiC + 2CO If 2 moles of SiO2 react with 5 moles of C, what is the limiting reactant?

Answer : The limiting reactant is, carbon (C)

Explanation : Given,

Moles of = 2 moles

Moles of C = 5 moles

Now we have to calculate the limiting and excess reagent.

The given balanced chemical reaction is:

From the balanced reaction we conclude that

As, 3 mole of react with 1 mole of

So, 5 moles of react with moles of

From this we conclude that, is an excess reagent because the given moles are greater than the required moles and is a limiting reagent and it limits the formation of product.

Thus, the limiting reactant is, carbon (C)

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explanation: