All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution:
Acetylene gas, C2H2(g), can be prepared by the reaction of calcium carbide with water: CaC2(s) + 2 H2O(l) → Ca(OH)2(s) + C2H2(g)Calculate the volume of C2H2 that is collected over water at 23 oC by reaction of 1.53 g of CaC2 if the total pressure of the gas is 753 torr. (The vapor pressure of water is 21.07 torr.)

Solution: Acetylene gas, C2H2(g), can be prepared by the reaction of calcium carbide with water: CaC2(s) + 2 H2O(l) → Ca(OH)2(s) + C2H2(g)Calculate the volume of C2H2 that is collected over water at 23 oC by re

Problem

Acetylene gas, C2H2(g), can be prepared by the reaction of calcium carbide with water:

 CaC2(s) + 2 H2O(l) → Ca(OH)2(s) + C2H2(g)

Calculate the volume of C2H2 that is collected over water at 23 oC by reaction of 1.53 g of CaC2 if the total pressure of the gas is 753 torr. (The vapor pressure of water is 21.07 torr.)

Solution
  • To calculate for the V of C2H, we have to find the moles of C2H2 using the balanced reaction with mass of CaCwhich is at 1.53 g
  • Volume of C2Hcan be solved using the ideal gas equation and the conditions for temperature and pressure when we already have the moles of C2H2
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