Heat requirement for decomposition of a compound into its elements is __________ that is evolved during the formation of that compound from its elements.

A The same
B Less than
C Greater than
D Different than

Correct Answer: The same

Lavoisier and laplace law : the law states that the quantity of heat which must be supplied to decompose a compound in to its elemental form is equal to the amount of heat evolved during the formation compound from its element assuming no losses involved during both process.
Bissoy MCQ
#Chemical Engineering #Chemical Engineering Thermodynamics

Related Questions

The amount of heat required to decompose a compound into its elements is __________ the heat of formation of that compound from its elements.
A Less than
B More than
C Same as
D Not related to
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of
A Fusion
B Vaporisation
C Transition
D None of these
Heat of transition is the heat evolved or absorbed, when a substance is converted from
A Vapor to liquid
B Vapor to solid
C Solid to liquid
D One allotropic form to another allotropic form
In presence of a catalyst the heat evolved or absorbed during a reaction-
A Increases
B Decreases
C May increase ofr decrease
D Remains unaffected
Read the paragraph and answer the question-photosynthesis is a process in which radiant energy from sun is stored as chemical energy , which in turn is used to decompose carbon dioxide and water. The product of their decomposition are recombined into a new compound which successively builds, up into more and more complex organic substances like sugars, starches and cellulose that comprise the plant.The word stored in the paragraph is closest in morning to
A specified
B retained
C converted
D discovered
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is
A H2
B CH4
C CO2
D N2
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
A Temperature & pressure
B Number of intermediate chemical reactions involved
C State of aggregation & the state of combination at the beginning & the end of the reaction
D None of these
For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it
A Occupies smaller space
B Is more economical
C Is easy to operate and maintain
D All of the above
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the
A Trouton's rule
B Kopp's rule
C Antonie equation
D Kistyakowsky equation
How are the efficiencies of any heat engine (miu) and reversible heat engine (miuR) compared, when both are operating between same heat source and same heat sink?
A miu = miuR
B miu>miuR
C miu
D none of these

Next steps