Question

CaC2 + 2H2O(I) = C2H2(g) + Ca(OH)2(aq) how many grams of Ca(OH)2 would be formed with 3.20 moles of CaC2?

Answer 1

Answer:

236.8 g

Explanation:

From the reaction equation;

CaC2 + 2H2O(I) --------> C2H2(g) + Ca(OH)2(aq)

Since;

1 mole of CaC2 yields 1 mole of Ca(OH)2

It follows that 3.20 moles of CaC2 also yields 3.2 moles of Ca(OH)2

Mass of Ca(OH)2 = number of moles * molar mass

molar mass of Ca(OH)2 = 74 g/mol

Mass of Ca(OH)2 = 3.20 moles * 74 g/mol =

Mass of Ca(OH)2 = 236.8 g