Enthalpy of Formation of CaO
Not what you're looking for?
Calcium metal burns according to the following equation: Ca(s) + 1/2 O2(g) --> CaO (s).
When 1.00 g of calcium metal is burned in a constant pressure calorimeter with a heat capacity of 15.20 kJ/K, the temperature increases by 1.04 degrees Celcius. Calculate the enthalpy of formation of calcium oxide. Compare this answer with -635.09 kJ/mol.
Purchase this Solution
Solution Summary
The expert calculates the enthalpy of formation of calcium oxide. The solution explains each step and provides all mathematical steps.
Solution Preview
Enthalpy of formation (DHof)is the enthalpy change when 1 mole of a substance is formed from its constituent elements in their standard states with measurements made under standard conditions of 298K and 1 atm.
The measurement of enthalpy changes of chemical and physical processes is accomplished by calorimetry. The chemical or physical process is carried out on a precisely known scale in an insulated container called a calorimeter.
The insulation prevents the flow of heat from the surroundings to the system (inside the calorimeter) ...
Purchase this Solution
Free BrainMass Quizzes
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.