Calcium carbide, CaC₂, reacts with water to produce calcium hydroxide and acetylene gas, C₂H₂. $\mathrm{CaC}_{2}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{Ca}(\mathrm{OH})_{2}(a q)+\mathrm{C}_{2} \mathrm{H}_{2}(g)$ How many grams of acetylene can be produced from 30.0 g of calcium carbide?

Question

Quizplus · Accepted Answer

The molar mass of CaC₂ is 64.1 g/mol, and the molar mass of C₂H₂ is 26.0 g/mol. From 30.0 g of CaC₂, you can produce (30.0 g / 64.1 g/mol) * 26.0 g/mol = 12.2 g of C₂H₂.

Calcium Carbide, CaC₂, Reacts with Water to Produce Calcium Hydroxide CaC2(s)+2H2O(l)→Ca(OH)2(aq)+C2H2(g)\mathrm{CaC}_{2}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{Ca}(\mathrm{OH})_{2}(a q)+\mathrm{C}_{2} \mathrm{H}_{2}(g)CaC2​(s)+2H2​O(l)→Ca(OH)2​(aq)+C2​H2​(g)

Calcium Carbide, CaC₂, Reacts with Water to Produce Calcium Hydroxide $\mathrm{CaC}_{2}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{Ca}(\mathrm{OH})_{2}(a q)+\mathrm{C}_{2} \mathrm{H}_{2}(g)$