How many grams of acetylene are produced by adding 3 moles of cac2

78.12g of acetylene

Explanation:

Acetylene and calcium hydroxide are produced when H₂O reacts with CaC₂. The reaction is:

2 H₂O + CaC₂ → C₂H₂ + Ca (OH) ₂

Where 1 mole of C₂H₂ (acetylene) is produced per mole of CaC₂

Thus, the addition of 3 moles of CaC₂ produces 3 moles of acetylene.

As molecular mass of acetylene is 26.04g/mol, grams of acetylene produced are:

3mol C₂H₂ * (26.04g / mol) = 78.12g of acetylene