Before the development of reliable batteries, miners lamps burned acetylene ( C2H2 26.04g/mol) produced by the reaction of calcium carbide (CaC2 64.099g/mol) with water as seen here: CaC2(s) + H2O(l) --> C2H2(g) + CaO(s) (balanced) A single lamp requires 3.12 L of acetylene to burn for 1 hour at 1 atm pressure and 15.89 oC. How many grams of calcium carbide are needed for a 8 hour shift? (enter your numeric answer with 2 decimal places) For reference: R=0.0822 Latm/molK 0oC=273.15K
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Before the development of reliable batteries, miners lamps burned acetylene ( C2H2 26.04g/mol) produced by the reaction of calcium carbide (CaC2 64.099g/mol) with water as seen here:
CaC2(s) + H2O(l) --> C2H2(g) + CaO(s) (balanced)
A single lamp requires 3.12 L of acetylene to burn for 1 hour at 1 atm pressure and 15.89 oC. How many grams of calcium carbide are needed for a 8 hour shift? (enter your numeric answer with 2 decimal places)
For reference:
R=0.0822 Latm/molK
0oC=273.15K
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
