Final answer:
To find the volume of acetylene produced from 45 g of water reacting with calcium carbide, calculate the moles of water and use stoichiometry to find the moles of acetylene, then apply the ideal gas law at the relevant conditions.
Step-by-step explanation:
The subject of the question is Chemistry and it appears to be suited for a High School-level understanding of stoichiometry, chemical reactions, and gas laws. When calcium carbide reacts with water, acetylene gas (C₂H₂) and calcium hydroxide (Ca(OH)₂) are produced. To determine the volume of C₂H₂ produced from 45 g of water reacting completely with calcium carbide, you would first need to find the moles of water by dividing the mass (45 g) by the molar mass of water (18.015 g/mol). Assuming the reaction goes to completion and using the stoichiometry of the balanced equation CaC₂ (s) + 2 H₂O(l) → C₂H₂(g) + Ca(OH)₂ (s), you can then calculate the moles of acetylene produced and, using the ideal gas law, find the volume that these moles of C₂H₂ would occupy at a given temperature and pressure (e.g., STP).