Calcium carbide (CaC₂)reacts with water to produce acetylene (C₂H₂): CaC₂ (s)+ 2 H₂O (g)→ Ca(OH)₂ (s)+ C₂H₂ (g) Production of 3.3 g of C₂H₂ requires consumption of __________ g of H₂O. A)1.2 B)2.3 C)4.6 D)480 E)0.048

Question

Quizplus · Accepted Answer

The molar mass of C2H2 is 26 g/mol, so 3.3 g corresponds to 0.127 mol. According to the balanced equation, 2 moles of H2O are needed for each mole of C2H2, so 0.254 mol of H2O is needed. The molar mass of H2O is 18 g/mol, so 0.254 mol corresponds to 4.6 g of H2O.

Calcium Carbide (CaC2)reacts with Water to Produce Acetylene (C2H2): CaC2

Calcium Carbide (CaC₂)reacts with Water to Produce Acetylene (C₂H₂): CaC₂