Ritan Sheth
- Books Name
- Ritan Sheth Chemistry Book
- Publication
- Ritan Sheth
- Course
- CBSE Class 11
- Subject
- Chemistry
MEASUREMENT OF ΔU AND ΔH—CALORIMETRY
Determination of ΔU: ΔU is measured in a special type of calorimeter, called bomb calorimeter.
Working with calorimeter. The calorimeter consists of a strong vessel called (bomb) which can withstand very high pressure. It is surrounded by a water bath to ensure that no heat is lost to the surroundings.
Procedure: A known mass of the combustible substance is burnt in the pressure of pure dioxygen in the steel bomb. Heat evolved during the reaction is transferred to the water and its temperature is monitored.
