Respuesta :

Explanation:

We need to discover the limiting and excess reactant first.

For this, we use the reaction equation ratio between CaC2 + 2H2O.

The equation:

CaC2 + 2H2O --> Ca(OH)2 + C2H2

tells us that 1 mole of CaC2 react with 2 mol of H2O.

The question gives us 8 moles of CaC2 and 3 moles of H2O.

we can see that CaC2 is in excess and H2O is the limiting reactant.

So:

1 mole of CaC2 --- 2 mol of H2O

x mole of CaC2 --- 3 moles of H2O

x = 1.5 moles of CaC2.

1 mole of CaC2 produces 1 mole of C2H2.

So 1.5 moles of CaC2 produces 1.5 moles of C2H2.

Answer: 1.5 moles of C2H2.

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